Publications

Journal publications:

(for  conference papers or student theses , contact Kenny Breuer directly)

2019

  • [DOI] G. Alon Tzezana and K. S. Breuer, “Thrust, drag and wake structure in flapping compliant membrane wings,” Journal of Fluid Mechanics, vol. 862, p. 871–888, 2019.
    [Bibtex]
    @article{alon_tzezana2019,
    Author = {Alon Tzezana, Gali and Breuer, Kenneth S.},
    Date-Added = {2019-01-16 14:10:35 -0500},
    Date-Modified = {2019-01-16 14:10:35 -0500},
    Doi = {10.1017/jfm.2018.966},
    Journal = {Journal of Fluid Mechanics},
    Pages = {871--888},
    Publisher = {Cambridge University Press},
    Title = {Thrust, drag and wake structure in flapping compliant membrane wings},
    Volume = {862},
    Year = {2019},
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    Bdsk-Url-1 = {https://doi.org/10.1017/jfm.2018.966}}
  • D. Boerma, K. S. Breuer, and S. M. Swartz, “Wings as inertial appendages: how bats recover from aerial stumbles,” , vol. (in review), 2019.
    [Bibtex]
    @article{Boerma2019,
    Author = {Boerma, David and Breuer, , Kenneth S. and Sharon M Swartz},
    Date-Added = {2019-01-17 08:23:33 -0500},
    Date-Modified = {2019-01-22 11:00:54 -0500},
    Title = {Wings as inertial appendages: how bats recover from aerial stumbles},
    Volume = {(in review)},
    Year = {2019}}
  • [DOI] Y. Su, M. Miller, S. Mandre, and K. Breuer, “Confinement effects on energy harvesting by a heaving and pitching hydrofoil,” Journal of Fluids and Structures, vol. 84, p. 233–242, 2019.
    [Bibtex]
    @article{su2019confinement,
    Author = {Su, Yunxing and Miller, Michael and Mandre, Shreyas and Breuer, Kenneth},
    Date-Added = {2018-12-04 14:44:17 -0500},
    Date-Modified = {2018-12-04 14:45:05 -0500},
    Doi = {https://doi.org/10.1016/j.jfluidstructs.2018.11.006},
    Journal = {Journal of Fluids and Structures},
    Pages = {233--242},
    Publisher = {Academic Press},
    Title = {Confinement effects on energy harvesting by a heaving and pitching hydrofoil},
    Volume = {84},
    Year = {2019},
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  • [DOI] H. R. Vejdani, D. B. Boerma, S. M. Swartz, and K. S. Breuer, “The dynamics of hovering flight in hummingbirds, insects and bats with implications for aerial robotics,” Bioinspiration & Biomimetics, vol. 14, iss. 1, p. 16003, 2019.
    [Bibtex]
    @article{Vejdani2019,
    Abstract = {We analyze the effects of morphology and wing kinematics on the performance of hovering flight. We present a simplified dynamical model with body translational and rotational degrees of freedom that incorporates the flapping, long-axis wing rotation and folding of the wing. To validate our simulation, we compare our results with direct measurements from hovering insects, hummingbirds and bats. Results show that long-axis wing rotation angle (a proxy for pronation) has a significant effect on energy efficiency. For a given wing rotation amplitude, the hovering system has a power-optimal flapping frequency for each stroke-plane orientation, and that frequency closely corresponds to the wingbeat frequencies observed in a diverse range of hummingbird species. We find that larger animals (with larger total mass and wing size), such as bats, require more power to maintain a stable hovering orbit and that hovering with a constant wingspan becomes increasingly impractical with increasing body size. We show, as an exemplar, that for a system of the size of a hovering bat, e.g. Glossophaga soricina , hovering with constant wingspan is dynamically possible, but is implausible and inefficient. For these conditions, hovering with varying wingspan, retracting the wing on the upstroke, is a more realistic hovering modality.},
    Annote = {(Selected as Featured Article)},
    Author = {Hamid R Vejdani and David B Boerma and Sharon M Swartz and Kenneth S Breuer},
    Date-Added = {2018-12-04 14:49:10 -0500},
    Date-Modified = {2019-01-22 10:57:13 -0500},
    Doi = {https://doi.org/10.1088/1748-3190/aaea56},
    Journal = {Bioinspiration \& Biomimetics},
    Note = {(Selected as Featured Article)},
    Number = {1},
    Pages = {016003},
    Title = {The dynamics of hovering flight in hummingbirds, insects and bats with implications for aerial robotics},
    Url = {http://stacks.iop.org/1748-3190/14/i=1/a=016003},
    Volume = {14},
    Year = {2019},
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    Bdsk-Url-1 = {http://stacks.iop.org/1748-3190/14/i=1/a=016003}}

2018

  • [DOI] Z. Qu, F. Z. Temel, R. Henderikx, and K. S. Breuer, “Changes in the flagellar bundling time account for variations in swimming behavior of flagellated bacteria in viscous media,” Proceedings of the National Academy of Sciences, 2018.
    [Bibtex]
    @article{Qu201714187,
    Abstract = {Changes in the swimming speed and behavior of wild-type Escherichia coli in Newtonian fluids of varying viscosity are described. Individual cells exhibit both {\textquotedblleft}run-and-tumble{\textquotedblright} and {\textquotedblleft}slow random-walk{\textquotedblright} modes of motility. As the solution viscosity rises, variations in the flagellar bundling time account for changes in the swimming behavior of the cells. A unique contribution is the identification of the skewness of the speed distribution as a key parameter for characterizing different swimming behaviors. The skewness is shown to be solely a function of viscosity and independent of the cell{\textquoteright}s metabolic activity. Using both numerical simulation and resistive force theory, we compute the flagellar bundling time as a function of viscosity and achieve good agreement with direct observations.Although the motility of the flagellated bacteria, Escherichia coli, has been widely studied, the effect of viscosity on swimming speed remains controversial. The swimming mode of wild-type E. coli is often idealized as a run-and-tumble sequence in which periods of swimming at a constant speed are randomly interrupted by a sudden change of direction at a very low speed. Using a tracking microscope, we follow cells for extended periods of time in Newtonian liquids of varying viscosity and find that the swimming behavior of a single cell can exhibit a variety of behaviors, including run and tumble and {\textquotedblleft}slow random walk{\textquotedblright} in which the cells move at a relatively low speed. Although the characteristic swimming speed varies between individuals and in different polymer solutions, we find that the skewness of the speed distribution is solely a function of viscosity and can be used, in concert with the measured average swimming speed, to determine the effective running speed of each cell. We hypothesize that differences in the swimming behavior observed in solutions of different viscosity are due to changes in the flagellar bundling time, which increases as the viscosity rises, due to the lower rotation rate of the flagellar motor. A numerical simulation and the use of resistive force theory provide support for this hypothesis.},
    Author = {Qu, Zijie and Temel, Fatma Zeynep and Henderikx, Rene and Breuer, Kenneth S.},
    Date-Added = {2018-02-07 15:17:34 +0000},
    Date-Modified = {2018-02-07 15:17:34 +0000},
    Doi = {10.1073/pnas.1714187115},
    Eprint = {http://www.pnas.org/content/early/2018/02/05/1714187115.full.pdf},
    Issn = {0027-8424},
    Journal = {Proceedings of the National Academy of Sciences},
    Publisher = {National Academy of Sciences},
    Title = {Changes in the flagellar bundling time account for variations in swimming behavior of flagellated bacteria in viscous media},
    Url = {http://www.pnas.org/content/early/2018/02/05/1714187115},
    Year = {2018},
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    Bdsk-Url-1 = {http://www.pnas.org/content/early/2018/02/05/1714187115},
    Bdsk-Url-2 = {https://dx.doi.org/10.1073/pnas.1714187115}}

2017

  • [DOI] J. A. Franck and K. S. Breuer, “Unsteady high-lift mechanisms from heaving flat plate simulations,” International Journal of Heat and Fluid Flow, vol. 67, Part A, pp. 230-239, 2017.
    [Bibtex]
    @article{Franck2017,
    Author = {Jennifer A. Franck and Kenneth S. Breuer},
    Date-Added = {2017-09-07 17:51:09 +0000},
    Date-Modified = {2017-12-22 02:39:05 +0000},
    Doi = {https://doi.org/10.1016/j.ijheatfluidflow.2017.08.012},
    Issn = {0142-727X},
    Journal = {International Journal of Heat and Fluid Flow},
    Keywords = {LES},
    Pages = {230 - 239},
    Title = {Unsteady high-lift mechanisms from heaving flat plate simulations},
    Url = {http://www.sciencedirect.com/science/article/pii/S0142727X17300619},
    Volume = {67, Part A},
    Year = {2017},
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    Bdsk-Url-1 = {http://www.sciencedirect.com/science/article/pii/S0142727X17300619},
    Bdsk-Url-2 = {https://doi.org/10.1016/j.ijheatfluidflow.2017.08.012}}
  • [DOI] D. Kim, B. Strom, S. Mandre, and K. Breuer, “Energy harvesting performance and flow structure of an oscillating hydrofoil with finite span,” Journal of Fluids and Structures, vol. 70, pp. 314-326, 2017.
    [Bibtex]
    @article{Kim2017,
    Abstract = {Abstract The energy harvesting performance and resulting flow structures of a hydrofoil oscillating in pitch and heave are studied experimentally in a water flume. The shape of a hydrofoil cross-section is shown to have negligible influence on the power generation for the geometries tested. It is found that contribution to efficiency from heaving motion increases with reduced frequency at optimal pitching amplitude. However, contribution to efficiency from pitching motion decreases with reduced frequency because the development of a leading-edge vortex during the stroke is delayed at the high reduced frequency. Increasing the aspect ratio of the hydrofoil leads to a higher contribution to efficiency from heaving over the range of aspect ratios considered in this study. However, the effect of the aspect ratio on efficiency from pitching is negligible. When end plates are mounted at both ends of the hydrofoil, heaving power enhances. However, the enhancement of heaving power becomes smaller with increasing aspect ratio. Meanwhile, pitching power improves uniformly with the addition of end plates for all three aspect ratios. Our study suggests that the dependence of energy harvesting performance on aspect ratio is due to the delayed growth of the leading-edge vortex near the ends of the hydrofoil. },
    Author = {Daegyoum Kim and Benjamin Strom and Shreyas Mandre and Kenneth Breuer},
    Date-Added = {2017-02-20 22:26:11 +0000},
    Date-Modified = {2017-12-22 02:39:12 +0000},
    Doi = {http://dx.doi.org/10.1016/j.jfluidstructs.2017.02.004},
    Issn = {0889-9746},
    Journal = {Journal of Fluids and Structures},
    Keywords = {Leading-edge vortex},
    Pages = {314 - 326},
    Title = {Energy harvesting performance and flow structure of an oscillating hydrofoil with finite span},
    Url = {http://www.sciencedirect.com/science/article/pii/S0889974616305114},
    Volume = {70},
    Year = {2017},
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    Bdsk-Url-1 = {http://www.sciencedirect.com/science/article/pii/S0889974616305114},
    Bdsk-Url-2 = {http://dx.doi.org/10.1016/j.jfluidstructs.2017.02.004}}
  • [DOI] N. Konow, J. A. Cheney, T. J. Roberts, J. Iriarte-D{‘i}az, K. S. Breuer, R. J. S. Waldman, and S. M. Swartz, “Speed-dependent modulation of wing muscle recruitment intensity and kinematics in two bat species,” Journal of Experimental Biology, vol. 220, iss. 10, p. 1820–1829, 2017.
    [Bibtex]
    @article{Konow1820,
    Abstract = {Animals respond to changes in power requirements during locomotion by modulating the intensity of recruitment of their propulsive musculature, but many questions concerning how muscle recruitment varies with speed across modes of locomotion remain unanswered. We measured normalized average burst EMG (aEMG) for pectoralis major and biceps brachii at different flight speeds in two relatively distantly related bat species: the aerial insectivore Eptesicus fuscus, and the primarily fruit-eating Carollia perspicillata. These ecologically distinct species employ different flight behaviors but possess similar wing aspect ratio, wing loading and body mass. Because propulsive requirements usually correlate with body size, and aEMG likely reflects force, we hypothesized that these species would deploy similar speed-dependent aEMG modulation. Instead, we found that aEMG was speed independent in E. fuscus and modulated in a U-shaped or linearly increasing relationship with speed in C. perspicillata. This interspecific difference may be related to differences in muscle fiber type composition and/or overall patterns of recruitment of the large ensemble of muscles that participate in actuating the highly articulated bat wing. We also found interspecific differences in the speed dependence of 3D wing kinematics: E. fuscus modulates wing flexion during upstroke significantly more than C. perspicillata. Overall, we observed two different strategies to increase flight speed: C. perspicillata tends to modulate aEMG, and E. fuscus tends to modulate wing kinematics. These strategies may reflect different requirements for avoiding negative lift and overcoming drag during slow and fast flight, respectively, a subject we suggest merits further study.},
    Author = {Konow, Nicolai and Cheney, Jorn A. and Roberts, Thomas J. and Iriarte-D{\'\i}az, Jose and Breuer, Kenneth S. and Waldman, J. Rhea S. and Swartz, Sharon M.},
    Date-Added = {2017-12-29 02:17:03 +0000},
    Date-Modified = {2017-12-29 02:17:03 +0000},
    Doi = {10.1242/jeb.144550},
    Eprint = {http://jeb.biologists.org/content/220/10/1820.full.pdf},
    Issn = {0022-0949},
    Journal = {Journal of Experimental Biology},
    Number = {10},
    Pages = {1820--1829},
    Publisher = {The Company of Biologists Ltd},
    Title = {Speed-dependent modulation of wing muscle recruitment intensity and kinematics in two bat species},
    Url = {http://jeb.biologists.org/content/220/10/1820},
    Volume = {220},
    Year = {2017},
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    Bdsk-Url-1 = {http://jeb.biologists.org/content/220/10/1820},
    Bdsk-Url-2 = {https://dx.doi.org/10.1242/jeb.144550}}
  • [DOI] K. Onoue and K. S. Breuer, “A scaling for vortex formation on swept and unswept pitching wings,” J. Fluid. Mech., vol. 832, pp. 697-720, 2017.
    [Bibtex]
    @article{Onoue2017,
    Annote = {doi:10.2514/6.2014-0712},
    Author = {Kyohei Onoue and Kenneth S. Breuer},
    Date-Added = {2015-04-16 10:09:19 +0000},
    Date-Modified = {2017-11-01 01:41:00 +0000},
    Doi = {10.1017/jfm.2017.710},
    Journal = jfm,
    Pages = {697-720},
    Title = {A scaling for vortex formation on swept and unswept pitching wings},
    Volume = {832},
    Year = {2017},
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  • [DOI] C. Schunk, S. M. Swartz, and K. S. Breuer, “The influence of aspect ratio and stroke pattern on force generation of a bat-inspired membrane wing,” Interface Focus, vol. 7, iss. 1, 2017.
    [Bibtex]
    @article{Schunk20160083,
    Abstract = {Aspect ratio (AR) is one parameter used to predict the flight performance of a bat species based on wing shape. Bats with high AR wings are thought to have superior lift-to-drag ratios and are therefore predicted to be able to fly faster or to sustain longer flights. By contrast, bats with lower AR wings are usually thought to exhibit higher manoeuvrability. However, the half-span ARs of most bat wings fall into a narrow range of about 2.5{\textendash}4.5. Furthermore, these predictions do not take into account the wide variation in flapping motion observed in bats. To examine the influence of different stroke patterns, we measured lift and drag of highly compliant membrane wings with different bat-relevant ARs. A two degrees of freedom shoulder joint allowed for independent control of flapping amplitude and wing sweep. We tested five models with the same variations of stroke patterns, flapping frequencies and wind speed velocities. Our results suggest that within the relatively small AR range of bat wings, AR has no clear effect on force generation. Instead, the generation of lift by our simple model mostly depends on wingbeat frequency, flapping amplitude and freestream velocity; drag is mostly affected by the flapping amplitude.},
    Author = {Schunk, Cosima and Swartz, Sharon M. and Breuer, Kenneth S.},
    Date-Added = {2017-12-29 02:19:10 +0000},
    Date-Modified = {2017-12-29 02:19:10 +0000},
    Doi = {10.1098/rsfs.2016.0083},
    Eprint = {http://rsfs.royalsocietypublishing.org/content/7/1/20160083.full.pdf},
    Issn = {2042-8898},
    Journal = {Interface Focus},
    Number = {1},
    Publisher = {Royal Society},
    Title = {The influence of aspect ratio and stroke pattern on force generation of a bat-inspired membrane wing},
    Url = {http://rsfs.royalsocietypublishing.org/content/7/1/20160083},
    Volume = {7},
    Year = {2017},
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    Bdsk-Url-1 = {http://rsfs.royalsocietypublishing.org/content/7/1/20160083},
    Bdsk-Url-2 = {https://dx.doi.org/10.1098/rsfs.2016.0083}}
  • H. Vejdani, D. Boerma, S. Swartz, and K. Breuer, “the mechanics of hovering in insects, hummingbirds and bats,” (in review), 2017.
    [Bibtex]
    @article{Vejdani2016:hovering,
    Author = {Vejdani, Hamid and Boerma, David and Swartz, Sharon and Breuer, Kenneth},
    Date-Added = {2017-01-03 04:05:19 +0000},
    Date-Modified = {2017-10-15 17:17:39 +0000},
    Journal = {(in review)},
    Title = {the mechanics of hovering in insects, hummingbirds and bats},
    Year = {2017}}
  • [DOI] R. M. Waldman and K. S. Breuer, “Camber and aerodynamic performance of compliant membrane wings,” J. Fluids & Struct., vol. 68, pp. 390-402, 2017.
    [Bibtex]
    @article{Waldman2017,
    Abstract = {Abstract We present a self-consistent theory to predict the behavior of compliant membrane wings subject to aerodynamic loads. The theory incorporates the Young--Laplace equation to treat nonlinear deformation of the membrane at low angles of attack and uses a potential flow model to estimate the aerodynamic load associated with the thin wing. The model is able to account for finite span wings as well as to predict the occurrence of lift hysteresis, in which a lightly pretensioned membrane adopts camber at zero angle of attack. The theory is compared with results from numerical simulations that couple the structural deformation of the membrane with the fluid flow and also with experimental measurements of free tip and supported tip membrane wings tested over a range of aeroelastic conditions. Predictions of camber, lift and vibrational frequency are in good general agreement with both numerical and experimental observations. },
    Author = {Rye M. Waldman and Kenneth S. Breuer},
    Date-Added = {2016-12-06 14:14:16 +0000},
    Date-Modified = {2017-01-04 19:03:41 +0000},
    Doi = {http://dx.doi.org/10.1016/j.jfluidstructs.2016.11.013},
    Issn = {0889-9746},
    Journal = jfs,
    Pages = {390 - 402},
    Title = {Camber and aerodynamic performance of compliant membrane wings},
    Url = {http://www.sciencedirect.com/science/article/pii/S088997461630353X},
    Volume = {68},
    Year = {2017},
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    Bdsk-Url-1 = {http://www.sciencedirect.com/science/article/pii/S088997461630353X},
    Bdsk-Url-2 = {http://dx.doi.org/10.1016/j.jfluidstructs.2016.11.013}}

2016

  • [DOI] J. W. Bahlman, R. M. Price-Waldman, H. W. Lippe, K. S. Breuer, and S. M. Swartz, “Simplifying a wing: diversity and functional consequences of digital joint reduction in bat wings,” Journal of Anatomy, vol. 229, iss. 1, p. 114–127, 2016.
    [Bibtex]
    @article{Bahlman2016,
    Author = {Bahlman, Joseph W. and Price-Waldman, Rosalyn M. and Lippe, Hannah W. and Breuer, Kenneth S. and Swartz, Sharon M.},
    Date-Added = {2017-12-29 02:13:48 +0000},
    Date-Modified = {2017-12-29 02:14:12 +0000},
    Doi = {10.1111/joa.12457},
    Issn = {1469-7580},
    Journal = {Journal of Anatomy},
    Keywords = {anatomy, bat, Chiroptera, flight, joint, muscle loss, wing},
    Number = {1},
    Pages = {114--127},
    Title = {Simplifying a wing: diversity and functional consequences of digital joint reduction in bat wings},
    Url = {http://dx.doi.org/10.1111/joa.12457},
    Volume = {229},
    Year = {2016},
    Bdsk-Url-1 = {http://dx.doi.org/10.1111/joa.12457}}
  • [DOI] T. Y. Hubel, N. I. Hristov, S. M. Swartz, and K. S. Breuer, “Wake structure and kinematics in two insectivorous bats,” Proc. Roy. Soc. B., vol. 371, iss. 1704, 2016.
    [Bibtex]
    @article{Hubel2016,
    Abstract = {We compare kinematics and wake structure over a range of flight speeds (4.0{\textendash}8.2 m s-1) for two bats that pursue insect prey aerially, Tadarida brasiliensis and Myotis velifer. Body mass and wingspan are similar in these species, but M. velifer has broader wings and lower wing loading. By using high-speed videography and particle image velocimetry of steady flight in a wind tunnel, we show that three-dimensional kinematics and wake structure are similar in the two species at the higher speeds studied, but differ at lower speeds. At lower speeds, the two species show significant differences in mean angle of attack, body{\textendash}wingtip distance and sweep angle. The distinct body vortex seen at low speed in T. brasiliensis and other bats studied to date is considerably weaker or absent in M. velifer. We suggest that this could be influenced by morphology: (i) the narrower thorax in this species probably reduces the body-induced discontinuity in circulation between the two wings and (ii) the wing loading is lower, hence the lift coefficient required for weight support is lower. As a result, in M. velifer, there may be a decreased disruption in the lift generation between the body and the wing, and the strength of the characteristic root vortex is greatly diminished, both suggesting increased flight efficiency.This article is part of the themed issue {\textquoteleft}Moving in a moving medium: new perspectives on flight{\textquoteright}.},
    Author = {Hubel, Tatjana Y. and Hristov, Nickolay I. and Swartz, Sharon M. and Breuer, Kenneth S.},
    Date-Added = {2016-12-12 19:59:39 +0000},
    Date-Modified = {2017-01-04 19:03:01 +0000},
    Doi = {10.1098/rstb.2015.0385},
    Eprint = {http://rstb.royalsocietypublishing.org/content/371/1704/20150385.full.pdf},
    Issn = {0962-8436},
    Journal = prsb,
    Number = {1704},
    Publisher = {The Royal Society},
    Title = {Wake structure and kinematics in two insectivorous bats},
    Url = {http://rstb.royalsocietypublishing.org/content/371/1704/20150385},
    Volume = {371},
    Year = {2016},
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    Bdsk-Url-1 = {http://rstb.royalsocietypublishing.org/content/371/1704/20150385},
    Bdsk-Url-2 = {http://dx.doi.org/10.1098/rstb.2015.0385}}
  • [DOI] J. Kiser, M. Manning, D. Adler, and K. Breuer, “A reduced order model for dielectric elastomer actuators over a range of frequencies and prestrains,” Applied Physics Letters, vol. 109, iss. 13, 2016.
    [Bibtex]
    @article{Kiser2016,
    Author = {Kiser, Jillian and Manning, Michael and Adler, David and Breuer, Kenneth},
    Date-Added = {2016-12-12 19:58:08 +0000},
    Date-Modified = {2016-12-12 19:58:11 +0000},
    Doi = {http://dx.doi.org/10.1063/1.4963729},
    Eid = 133506,
    Journal = {Applied Physics Letters},
    Number = {13},
    Title = {A reduced order model for dielectric elastomer actuators over a range of frequencies and prestrains},
    Url = {http://scitation.aip.org/content/aip/journal/apl/109/13/10.1063/1.4963729},
    Volume = {109},
    Year = {2016},
    Bdsk-File-1 = {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},
    Bdsk-Url-1 = {http://scitation.aip.org/content/aip/journal/apl/109/13/10.1063/1.4963729},
    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.4963729}}
  • [DOI] K. Onoue and K. S. Breuer, “Vortex formation and growth from a cyber-physical pitching plate,” J. Fluid. Mech., vol. 793, pp. 229-247, 2016.
    [Bibtex]
    @article{Onoue2016,
    Annote = {doi:10.2514/6.2014-0712},
    Author = {Kyohei Onoue and Kenneth S. Breuer},
    Date-Added = {2016-12-13 14:02:41 +0000},
    Date-Modified = {2016-12-13 14:02:41 +0000},
    Doi = {10.1017/jfm.2016.134},
    Journal = jfm,
    Pages = {229-247},
    Title = {Vortex formation and growth from a cyber-physical pitching plate},
    Volume = {793},
    Year = {2016},
    Bdsk-File-1 = {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}}

2015

  • [DOI] A. J. Bergou, S. M. Swartz, H. Vejdani, D. K. Riskin, L. Reimnitz, G. Taubin, and K. S. Breuer, “Falling with Style: Bats perform complex aerial rotations by adjusting wing inertia,” PLOS Biology, vol. 13, iss. 11, p. e1002297, 2015.
    [Bibtex]
    @article{Bergou2015,
    Author = {Attila J. Bergou and Sharon M. Swartz and Hamid Vejdani and Daniel K. Riskin and Lauren Reimnitz and Gabriel Taubin and Kenneth S. Breuer},
    Date-Added = {2015-10-09 21:15:24 +0000},
    Date-Modified = {2015-11-16 20:46:05 +0000},
    Doi = {10.1371/journal.pbio.1002297},
    Journal = {PLOS Biology},
    Number = {11},
    Pages = {e1002297},
    Title = {{Falling with Style: Bats perform complex aerial rotations by adjusting wing inertia}},
    Volume = {13},
    Year = {2015},
    Bdsk-File-1 = {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}}
  • [DOI] K. Onoue, A. Song, B. W. Strom, and K. S. Breuer, “Cyber-physical Energy Harvesting through Flow-Induced Oscillations of a Rectangular Plate,” J. Fluids & Struct., vol. 55, pp. 262-275, 2015.
    [Bibtex]
    @article{Onoue2015,
    Annote = {doi:10.2514/6.2014-0712},
    Author = {Kyohei Onoue and Arnold Song and Benjamin W. Strom and Kenneth S. Breuer},
    Date-Added = {2015-03-18 05:51:14 +0000},
    Date-Modified = {2015-09-04 14:17:52 +0000},
    Doi = {10.1016/j.jfluidstructs.2015.03.004},
    Journal = jfs,
    Pages = {262-275},
    Title = {Cyber-physical Energy Harvesting through Flow-Induced Oscillations of a Rectangular Plate},
    Volume = {55},
    Year = {2015},
    Bdsk-File-1 = {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},
    Bdsk-Url-1 = {http://dx.doi.org/10.2514/6.2014-0712}}
  • [DOI] B. Qian, J. Park, and K. S. Breuer, “Large apparent slip at a moving contact line,” Phys. Fluids., vol. 27, p. 91703, 2015.
    [Bibtex]
    @article{Qian2015,
    Author = {Qian, Bian and Park, Joonsik and Breuer, Kenneth S.},
    Date-Added = {2015-10-02 14:25:21 +0000},
    Date-Modified = {2016-09-28 01:15:51 +0000},
    Doi = {http://dx.doi.org/10.1063/1.4931915},
    Eid = 091703,
    Journal = pf,
    Pages = {091703},
    Title = {Large apparent slip at a moving contact line},
    Url = {http://scitation.aip.org/content/aip/journal/pof2/27/9/10.1063/1.4931915},
    Volume = {27},
    Year = {2015},
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    Bdsk-Url-1 = {http://scitation.aip.org/content/aip/journal/pof2/27/9/10.1063/1.4931915},
    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.4931915}}

2014

  • [DOI] R. von Busse, R. M. Waldman, S. M. Swartz, C. C. Voigt, and K. S. Breuer, “The aerodynamic cost of flight in the short-tailed fruit bat (\emphCarollia perspicillata): comparing theory with measurement,” J. Roy. Soc. Int., vol. 11, iss. 95, 2014.
    [Bibtex]
    @article{Busse2014,
    Author = {von Busse, Rhea and Waldman, Rye M. and Swartz, Sharon M. and Voigt, Christian C. and Breuer, Kenneth S.},
    Date = {2014/06/06},
    Date-Added = {2014-04-09 20:27:25 +0000},
    Date-Modified = {2015-08-13 16:58:25 +0000},
    Doi = {10.1098/rsif.2014.0147},
    Journal = jrsi,
    Month = {06},
    Number = {95},
    Title = {The aerodynamic cost of flight in the short-tailed fruit bat (\emph{Carollia perspicillata}): comparing theory with measurement},
    Volume = {11},
    Year = {2014},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1098/rsif.2014.0147}}
  • [DOI] J. A. Cheney, D. Ton, N. Konow, D. K. Riskin, K. S. Breuer, and S. M. Swartz, “Hindlimb Motion during Steady Flight of the Lesser Dog-Faced Fruit Bat, \emphCynopterus brachyotis,” PLoS ONE, vol. 9, iss. 5, p. e98093, 2014.
    [Bibtex]
    @article{Cheney2014:Hindlimb,
    Abstract = {

    In bats, the wing membrane is anchored not only to the body and forelimb, but also to the hindlimb. This attachment configuration gives bats the potential to modulate wing shape by moving the hindlimb, such as by joint movement at the hip or knee. Such movements could modulate lift, drag, or the pitching moment. In this study we address: 1) how the ankle translates through space during the wingbeat cycle; 2) whether amplitude of ankle motion is dependent upon flight speed; 3) how tension in the wing membrane pulls the ankle; and 4) whether wing membrane tension is responsible for driving ankle motion. We flew five individuals of the lesser dog-faced fruit bat, Cynopterus brachyotis (Family: Pteropodidae), in a wind tunnel and documented kinematics of the forelimb, hip, ankle, and trailing edge of the wing membrane. Based on kinematic analysis of hindlimb and forelimb movements, we found that: 1) during downstroke, the ankle moved ventrally and during upstroke the ankle moved dorsally; 2) there was considerable variation in amplitude of ankle motion, but amplitude did not correlate significantly with flight speed; 3) during downstroke, tension generated by the wing membrane acted to pull the ankle dorsally, and during upstroke, the wing membrane pulled laterally when taut and dorsally when relatively slack; and 4) wing membrane tension generally opposed dorsoventral ankle motion. We conclude that during forward flight in C. brachyotis, wing membrane tension does not power hindlimb motion; instead, we propose that hindlimb movements arise from muscle activity and/or inertial effects.

    }, Author = {Cheney, , Jorn A. AND Ton, , Daniel AND Konow, , Nicolai AND Riskin, , Daniel K. AND Breuer, , Kenneth S. AND Swartz, , Sharon M.}, Date-Added = {2014-05-26 12:46:26 +0000}, Date-Modified = {2014-05-28 19:16:26 +0000}, Doi = {10.1371/journal.pone.0098093}, Journal = {PLoS ONE}, Month = {05}, Number = {5}, Pages = {e98093}, Publisher = {Public Library of Science}, Title = {Hindlimb Motion during Steady Flight of the Lesser Dog-Faced Fruit Bat, \emph{Cynopterus brachyotis}}, Url = {http://dx.doi.org/10.1371%2Fjournal.pone.0098093}, Volume = {9}, Year = {2014}, Bdsk-File-1 = {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}, Bdsk-Url-1 = {http://dx.doi.org/10.1371%2Fjournal.pone.0098093}, Bdsk-Url-2 = {http://dx.doi.org/10.1371/journal.pone.0098093}}
  • [DOI] O. M. Curet, A. Carrere, R. Waldman, and K. S. Breuer, “Aerodynamic Characterization of a Wing Membrane with Variable Compliance,” AIAA J., p. 1–8, 2014.
    [Bibtex]
    @article{Curet2014,
    Annote = {doi: 10.2514/1.J052688},
    Author = {Curet, Oscar M. and Carrere, Alex and Waldman, Rye and Breuer, Kenneth S.},
    Booktitle = aiaaj,
    Date = {2014/06/04},
    Date-Added = {2014-06-05 18:13:01 +0000},
    Date-Modified = {2014-06-05 18:13:13 +0000},
    Doi = {10.2514/1.J052688},
    Isbn = {0001-1452},
    Journal = aiaaj,
    Journal1 = aiaaj,
    M3 = {doi: 10.2514/1.J052688},
    Month = {2014/06/05},
    Pages = {1--8},
    Publisher = {American Institute of Aeronautics and Astronautics},
    Title = {Aerodynamic Characterization of a Wing Membrane with Variable Compliance},
    Ty = {JOUR},
    Url = {http://dx.doi.org/10.2514/1.J052688},
    Year = {2014},
    Year1 = {2014},
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    Bdsk-Url-1 = {http://dx.doi.org/10.2514/1.J052688}}
  • [DOI] J. W. Bahlman, S. M. Swartz, and K. S. Breuer, “How wing kinematics affect power requirements and aerodynamic force production in a robotic bat wing,” Bioinsp. and Biomim., vol. 9, iss. 2, p. 25008, 2014.
    [Bibtex]
    @article{Bahlman2014,
    Abstract = {Bats display a wide variety of behaviors that require different amounts of aerodynamic force. To control and modulate aerodynamic force, bats change wing kinematics, which, in turn, may change the power required for wing motion. There are many kinematic mechanisms that bats, and other flapping animals, can use to increase aerodynamic force, e.g. increasing wingbeat frequency or amplitude. However, we do not know if there is a difference in energetic cost between these different kinematic mechanisms. To assess the relationship between mechanical power input and aerodynamic force output across different isolated kinematic parameters, we programmed a robotic bat wing to flap over a range of kinematic parameters and measured aerodynamic force and mechanical power. We systematically varied five kinematic parameters: wingbeat frequency, wingbeat amplitude, stroke plane angle, downstroke ratio, and wing folding. Kinematic values were based on observed values from free flying Cynopterus brachyotis, the species on which the robot was based. We describe how lift, thrust, and power change with increases in each kinematic variable. We compare the power costs associated with generating additional force through the four kinematic mechanisms controlled at the shoulder, and show that all four mechanisms require approximately the same power to generate a given force. This result suggests that no single parameter offers an energetic advantage over the others. Finally, we show that retracting the wing during upstroke reduces power requirements for flapping and increases net lift production, but decreases net thrust production. These results compare well with studies performed on C. brachyotis, offering insight into natural flight kinematics.},
    Author = {Joseph W Bahlman and Sharon M Swartz and Kenneth S Breuer},
    Date-Added = {2014-05-22 21:31:56 +0000},
    Date-Modified = {2015-10-14 11:17:53 +0000},
    Doi = {10.1088/1748-3182/9/2/025008},
    Journal = bb,
    Number = {2},
    Pages = {025008},
    Title = {How wing kinematics affect power requirements and aerodynamic force production in a robotic bat wing},
    Url = {http://stacks.iop.org/1748-3190/9/i=2/a=025008},
    Volume = {9},
    Year = {2014},
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    Bdsk-Url-1 = {http://stacks.iop.org/1748-3190/9/i=2/a=025008},
    Bdsk-Url-2 = {http://dx.doi.org/10.1088/1748-3182/9/2/025008}}
  • [DOI] J. A. Cheney, N. Konow, K. M. Middleton, K. S. Breuer, T. J. Roberts, E. L. Giblin, and S. M. Swartz, “Membrane muscle function in the compliant wings of bats,” Bioinsp. and Biomim., vol. 9, iss. 2, p. 25007, 2014.
    [Bibtex]
    @article{Cheney2014,
    Abstract = {Unlike flapping birds and insects, bats possess membrane wings that are more similar to many gliding mammals. The vast majority of the wing is composed of a thin compliant skin membrane stretched between the limbs, hand, and body. Membrane wings are of particular interest because they may offer many advantages to micro air vehicles. One critical feature of membrane wings is that they camber passively in response to aerodynamic load, potentially allowing for simplified wing control. However, for maximum membrane wing performance, tuning of the membrane structure to aerodynamic conditions is necessary. Bats possess an array of muscles, the plagiopatagiales proprii, embedded within the wing membrane that could serve to tune membrane stiffness, or may have alternative functions. We recorded the electromyogram from the plagiopatagiales proprii muscles of Artibeus jamaicensis , the Jamaican fruit bat, in flight at two different speeds and found that these muscles were active during downstroke. For both low- and high-speed flight, muscle activity increased between late upstroke and early downstroke and decreased at late downstroke. Thus, the array of plagiopatagiales may provide a mechanism for bats to increase wing stiffness and thereby reduce passive membrane deformation. These muscles also activate in synchrony, presumably as a means to maximize force generation, because each muscle is small and, by estimation, weak. Small differences in activation timing were observed when comparing low- and high-speed flight, which may indicate that bats modulate membrane stiffness differently depending on flight speed.},
    Author = {J A Cheney and N Konow and K M Middleton and K S Breuer and T J Roberts and E L Giblin and S M Swartz},
    Date-Added = {2014-05-22 21:24:53 +0000},
    Date-Modified = {2016-09-28 01:09:40 +0000},
    Doi = {10.1088/1748-3182/9/2/025007},
    Journal = bb,
    Number = {2},
    Pages = {025007},
    Title = {Membrane muscle function in the compliant wings of bats},
    Url = {http://stacks.iop.org/1748-3190/9/i=2/a=025007},
    Volume = {9},
    Year = {2014},
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    Bdsk-Url-1 = {http://stacks.iop.org/1748-3190/9/i=2/a=025007},
    Bdsk-Url-2 = {http://dx.doi.org/10.1088/1748-3182/9/2/025007}}
  • [DOI] B. Liu, M. Gulino, M. Morse, J. X. Tang, T. R. Powers, and K. S. Breuer, “Helical motion of the cell body enhances \textitCaulobacter crescentus motility,” Proc. Nat. Acad. Sci., vol. 111, iss. 31, pp. 11252-11256, 2014.
    [Bibtex]
    @article{Liu2014,
    Abstract = {We resolve the 3D trajectory and the orientation of individual cells for extended times, using a digital tracking technique combined with 3D reconstructions. We have used this technique to study the motility of the uniflagellated bacterium Caulobacter crescentus and have found that each cell displays two distinct modes of motility, depending on the sense of rotation of the flagellar motor. In the forward mode, when the flagellum pushes the cell, the cell body is tilted with respect to the direction of motion, and it precesses, tracing out a helical trajectory. In the reverse mode, when the flagellum pulls the cell, the precession is smaller and the cell has a lower translation distance per rotation period and thus a lower motility. Using resistive force theory, we show how the helical motion of the cell body generates thrust and can explain the direction-dependent changes in swimming motility. The source of the cell body precession is believed to be associated with the flexibility of the hook that connects the flagellum to the cell body.},
    Author = {Liu, Bin and Gulino, Marco and Morse, Michael and Tang, Jay X. and Powers, Thomas R. and Breuer, Kenneth S.},
    Date-Added = {2014-08-22 19:09:06 +0000},
    Date-Modified = {2019-01-22 11:00:36 -0500},
    Doi = {10.1073/pnas.1407636111},
    Eprint = {http://www.pnas.org/content/111/31/11252.full.pdf+html},
    Journal = pnas,
    Number = {31},
    Pages = {11252-11256},
    Title = {Helical motion of the cell body enhances \textit{Caulobacter crescentus} motility},
    Url = {http://www.pnas.org/content/111/31/11252.abstract},
    Volume = {111},
    Year = {2014},
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    Bdsk-Url-1 = {http://www.pnas.org/content/111/31/11252.abstract},
    Bdsk-Url-2 = {http://dx.doi.org/10.1073/pnas.1407636111}}
  • [DOI] B. Liu, K. S. Breuer, and T. R. Powers, “Propulsion by a helical flagellum in a capillary tube,” Phys. Fluids., vol. 26, iss. 1, 2014.
    [Bibtex]
    @article{Liu2014:propulsion,
    Author = {Liu, Bin and Breuer, Kenneth S. and Powers, Thomas R.},
    Date-Added = {2014-01-10 11:45:22 +0000},
    Date-Modified = {2015-03-25 14:35:39 +0000},
    Doi = {10.1063/1.4861026},
    Eid = 011701,
    Journal = pf,
    Number = {1},
    Title = {Propulsion by a helical flagellum in a capillary tube},
    Url = {http://scitation.aip.org/content/aip/journal/pof2/26/1/10.1063/1.4861026},
    Volume = {26},
    Year = {2014},
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    Bdsk-Url-1 = {http://scitation.aip.org/content/aip/journal/pof2/26/1/10.1063/1.4861026},
    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.4861026}}

2013

  • [DOI] J. W. Bahlman, S. M. Swartz, and K. S. Breuer, “Design and characterization of a multi-articulated robotic bat wing,” Bioinsp. and Biomim., vol. 8, iss. 1, p. 16009, 2013.
    [Bibtex]
    @article{Bahlman2013:RoBat,
    Author = {Joseph W Bahlman and Sharon M Swartz and Kenneth S Breuer},
    Date-Added = {2013-06-09 18:03:48 +0000},
    Date-Modified = {2013-06-09 18:05:09 +0000},
    Doi = {10.1088/1748-3182/8/1/016009},
    Journal = bb,
    Number = {1},
    Pages = {016009},
    Title = {Design and characterization of a multi-articulated robotic bat wing},
    Url = {http://stacks.iop.org/1748-3190/8/i=1/a=016009},
    Volume = {8},
    Year = {2013},
    Bdsk-File-1 = {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},
    Bdsk-Url-1 = {http://stacks.iop.org/1748-3190/8/i=1/a=016009},
    Bdsk-Url-2 = {http://dx.doi.org/10.1088/1748-3182/8/1/016009}}
  • [DOI] J. W. Bahlman, S. M. Swartz, D. K. Riskin, and K. S. Breuer, “Glide performance and aerodynamics of non-equilibrium glides in northern flying squirrels (\emphGlaucomys sabrinus),” J. Roy. Soc. Int., vol. 10, iss. 80, p. 20120794, 2013.
    [Bibtex]
    @article{Bahlman2013,
    Abstract = {Gliding is an efficient form of travel found in every major group of terrestrial vertebrates. Gliding is often modelled in equilibrium, where aerodynamic forces exactly balance body weight resulting in constant velocity. Although the equilibrium model is relevant for long-distance gliding, such as soaring by birds, it may not be realistic for shorter distances between trees. To understand the aerodynamics of inter-tree gliding, we used direct observation and mathematical modelling. We used videography (60-125 fps) to track and reconstruct the three-dimensional trajectories of northern flying squirrels (Glaucomys sabrinus) in nature. From their trajectories, we calculated velocities, aerodynamic forces and force coefficients. We determined that flying squirrels do not glide at equilibrium, and instead demonstrate continuously changing velocities, forces and force coefficients, and generate more lift than needed to balance body weight. We compared observed glide performance with mathematical simulations that use constant force coefficients, a characteristic of equilibrium glides. Simulations with varying force coefficients, such as those of live squirrels, demonstrated better whole-glide performance compared with the theoretical equilibrium state. Using results from both the observed glides and the simulation, we describe the mechanics and execution of inter-tree glides, and then discuss how gliding behaviour may relate to the evolution of flapping flight.},
    Author = {Bahlman, Joseph W and Swartz, Sharon M and Riskin, Daniel K and Breuer, Kenneth S},
    Date-Added = {2012-12-23 17:26:16 +0000},
    Date-Modified = {2017-11-30 21:51:15 +0000},
    Doi = {10.1098/rsif.2012.0794},
    Journal = jrsi,
    Journal-Full = {J. the Royal Society, Interface / the Royal Society},
    Number = {80},
    Pages = {20120794},
    Pmid = {23256188},
    Pst = {epublish},
    Title = {Glide performance and aerodynamics of non-equilibrium glides in northern flying squirrels (\emph{Glaucomys sabrinus})},
    Volume = {10},
    Year = {2013},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1098/rsif.2012.0794}}
  • [DOI] O. M. Curet, S. M. Swartz, and K. S. Breuer, “An aeroelastic instability provides a possible basis for the transition from gliding to flapping flight,” J. Roy. Soc. Int., vol. 10, iss. 80, 2013.
    [Bibtex]
    @article{Curet2013,
    Abstract = {The morphology, kinematics and stiffness properties of lifting surfaces play a key role in the aerodynamic performance of vertebrate flight. These surfaces, as a result of their flexible nature, may move both actively, owing to muscle contraction, and passively, in reaction to fluid forces. However, the nature and implications of this fluid-structure interaction are not well understood. Here, we study passive flight (flight with no active wing actuation) and explore a physical mechanism that leads to the emergence of a natural flapping motion. We model a vertebrate wing with a compliant shoulder and the ability to camber with an idealized physical model consisting of a cantilevered flat plate with a hinged trailing flap. We find that at low wind speed the wing is stationary, but at a critical speed the wing spontaneously flaps. The lift coefficient is significantly enhanced once the wing starts to oscillate, although this increase in lift generation is accompanied by an increase in drag. Flow visualization suggests that a strong leading edge vortex attached to the wing during downstroke is the primary mechanism responsible for the enhanced lift. The flapping instability we observe suggests a possible scenario for an evolutionary transition from gliding to powered flapping flight in animals that possess compliant wings capable of passive camber. Although the flapping state is accompanied by a lower lift-to-drag ratio, the increased lifting capability it confers might have enabled increased body mass, improved foraging performance and/or flight at lower speeds, any of which might have been selectively advantageous.
    },
    Author = {Curet, O.M. and Swartz, S.M. and Breuer, K.S.},
    Date-Added = {2013-01-24 12:57:57 +0000},
    Date-Modified = {2015-08-13 16:58:25 +0000},
    Doi = {10.1098/rsif.2012.0940},
    Journal = jrsi,
    Number = {80},
    Publisher = {The Royal Society},
    Title = {An aeroelastic instability provides a possible basis for the transition from gliding to flapping flight},
    Volume = {10},
    Year = {2013},
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  • [DOI] M. Dasgupta, B. Liu, H. C. Fu, M. Berhanu, K. S. Breuer, T. R. Powers, and A. Kudrolli, “Speed of a swimming sheet in Newtonian and viscoelastic fluids,” Phys. Rev. E., vol. 87, p. 13015, 2013.
    [Bibtex]
    @article{Dasgupta2013,
    Author = {Dasgupta, Moumita and Liu, Bin and Fu, Henry C. and Berhanu, Michael and Breuer, Kenneth S. and Powers, Thomas R. and Kudrolli, Arshad},
    Date-Added = {2013-01-24 13:01:19 +0000},
    Date-Modified = {2013-01-24 13:02:08 +0000},
    Doi = {10.1103/PhysRevE.87.013015},
    Issue = {1},
    Journal = pre,
    Month = {Jan},
    Numpages = {7},
    Pages = {013015},
    Publisher = {American Physical Society},
    Title = {Speed of a swimming sheet in {Newtonian} and viscoelastic fluids},
    Url = {http://link.aps.org/doi/10.1103/PhysRevE.87.013015},
    Volume = {87},
    Year = {2013},
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    Bdsk-Url-1 = {http://link.aps.org/doi/10.1103/PhysRevE.87.013015},
    Bdsk-Url-2 = {http://dx.doi.org/10.1103/PhysRevE.87.013015}}
  • [DOI] B. Liu, K. S. Breuer, and T. R. Powers, “Helical swimming in Stokes flow using a novel boundary-element method,” Phys. Fluids., vol. 25, iss. 6, p. 61902, 2013.
    [Bibtex]
    @article{Liu2013,
    Author = {Bin Liu and Kenneth S. Breuer and Thomas R. Powers},
    Date-Added = {2013-07-02 13:23:22 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {10.1063/1.4812246},
    Eid = {061902},
    Journal = pf,
    Keywords = {boundary-elements methods; cell motility; convergence of numerical methods; microorganisms},
    Number = {6},
    Numpages = {19},
    Pages = {061902},
    Publisher = {AIP},
    Title = {Helical swimming in {Stokes} flow using a novel boundary-element method},
    Url = {http://link.aip.org/link/?PHF/25/061902/1},
    Volume = {25},
    Year = {2013},
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    Bdsk-Url-1 = {http://link.aip.org/link/?PHF/25/061902/1},
    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.4812246}}

2012

  • [DOI] J. Iriarte-Diaz, D. K. Riskin, K. S. Breuer, and S. M. Swartz, “Kinematic Plasticity during Flight in Fruit Bats: Individual Variability in Response to Loading,” PLoS ONE, vol. 7, iss. 5, p. e36665, 2012.
    [Bibtex]
    @article{Iriarte-Diaz2012,
    Abstract = {

    All bats experience daily and seasonal fluctuation in body mass. An increase in mass requires changes in flight kinematics to produce the extra lift necessary to compensate for increased weight. How bats modify their kinematics to increase lift, however, is not well understood. In this study, we investigated the effect of a 20% increase in mass on flight kinematics for Cynopterus brachyotis, the lesser dog-faced fruit bat. We reconstructed the 3D wing kinematics and how they changed with the additional mass. Bats showed a marked change in wing kinematics in response to loading, but changes varied among individuals. Each bat adjusted a different combination of kinematic parameters to increase lift, indicating that aerodynamic force generation can be modulated in multiple ways. Two main kinematic strategies were distinguished: bats either changed the motion of the wings by primarily increasing wingbeat frequency, or changed the configuration of the wings by increasing wing area and camber. The complex, individual-dependent response to increased loading in our bats points to an underappreciated aspect of locomotor control, in which the inherent complexity of the biomechanical system allows for kinematic plasticity. The kinematic plasticity and functional redundancy observed in bat flight can have evolutionary consequences, such as an increase potential for morphological and kinematic diversification due to weakened locomotor trade-offs.

    }, Author = {Iriarte-Diaz, , Jose AND Riskin, , Daniel K. AND Breuer, , Kenneth S. AND Swartz, , Sharon M.}, Date-Added = {2012-05-18 12:41:22 +0000}, Date-Modified = {2012-05-18 12:41:31 +0000}, Doi = {10.1371/journal.pone.0036665}, Journal = {PLoS ONE}, Month = {05}, Number = {5}, Pages = {e36665}, Publisher = {Public Library of Science}, Title = {Kinematic Plasticity during Flight in Fruit Bats: Individual Variability in Response to Loading}, Url = {http://dx.doi.org/10.1371%2Fjournal.pone.0036665}, Volume = {7}, Year = {2012}, Bdsk-File-1 = {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}, Bdsk-Url-1 = {http://dx.doi.org/10.1371%2Fjournal.pone.0036665}, Bdsk-Url-2 = {http://dx.doi.org/10.1371/journal.pone.0036665}}
  • [DOI] J. Colorado, A. Barrientos, C. Rossi, J. W. Bahlman, and K. S. Breuer, “Biomechanics of smart wings in a bat robot: morphing wings using SMA actuators,” Bioinsp. and Biomim., vol. 7, iss. 3, p. 36006, 2012.
    [Bibtex]
    @article{Colorado2012,
    Abstract = {This paper presents the design of a bat-like micro aerial vehicle with actuated morphing wings. NiTi shape memory alloys (SMAs) acting as artificial biceps and triceps muscles are used for mimicking the morphing wing mechanism of the bat flight apparatus. Our objective is twofold. Firstly, we have implemented a control architecture that allows an accurate and fast SMA actuation. This control makes use of the electrical resistance measurements of SMAs to adjust morphing wing motions. Secondly, the feasibility of using SMA actuation technology is evaluated for the application at hand. To this purpose, experiments are conducted to analyze the control performance in terms of nominal and overloaded operation modes of the SMAs. This analysis includes: (i) inertial forces regarding the stretchable wing membrane and aerodynamic loads, and (ii) uncertainties due to impact of airflow conditions over the resistance-motion relationship of SMAs. With the proposed control, morphing actuation speed can be increased up to 2.5 Hz, being sufficient to generate lift forces at a cruising speed of 5 m/s.},
    Author = {Colorado, J and Barrientos, A and Rossi, C and Bahlman, J. W. and Breuer, K S},
    Date-Added = {2012-04-30 00:29:57 +0000},
    Date-Modified = {2013-04-25 19:13:27 +0000},
    Doi = {10.1088/1748-3182/7/3/036006},
    Journal = bb,
    Journal-Full = {Bioinspiration \& biomimetics},
    Month = {Apr},
    Number = {3},
    Pages = {036006},
    Pmid = {22535882},
    Pst = {aheadofprint},
    Title = {Biomechanics of smart wings in a bat robot: morphing wings using {SMA} actuators},
    Volume = {7},
    Year = {2012},
    Bdsk-File-1 = {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},
    Bdsk-Url-1 = {http://dx.doi.org/10.1088/1748-3182/7/3/036006}}
  • [DOI] T. Y. Hubel, N. I. Hristov, S. M. Swartz, and K. S. Breuer, “Changes in kinematics and aerodynamics over a range of speeds in \emphTadarida brasiliensis, the Brazilian free-tailed bat,” J. Roy. Soc. Int., vol. 9, iss. 71, pp. 1120-1130, 2012.
    [Bibtex]
    @article{Hubel2012,
    Abstract = {To date, wake measurements using particle image velocimetry (PIV) of bats in flight have studied only three bat species, all fruit and nectar feeders. In this study, we present the first wake structure analysis for an insectivorous bat. Tadarida brasiliensis, the Brazilian free-tailed bat, is an aerial hunter that annually migrates long distances and also differs strikingly from the previously investigated species morphologically. We compare the aerodynamics of T. brasiliensis with those of other, frugivorous bats and with common swifts, Apus apus, a bird with wing morphology, kinematics and flight ecology similar to that of these bats. The comparison reveals that, for the range of speeds evaluated, the cyclical pattern of aerodynamic forces associated with a wingbeat shows more similarities between T. brasiliensis and A. apus than between T. brasiliensis and other frugivorous bats.},
    Author = {Hubel, Tatjana Y and Hristov, Nickolay I and Swartz, Sharon M and Breuer, Kenneth S},
    Date-Added = {2012-03-30 01:37:15 +0000},
    Date-Modified = {2015-08-13 16:59:18 +0000},
    Doi = {10.1098/rsif.2011.0838},
    Journal = jrsi,
    Journal-Full = {J. the Royal Society, Interface / the Royal Society},
    Month = {Jan},
    Number = {71},
    Pages = {1120-1130},
    Pmid = {22258554},
    Pst = {aheadofprint},
    Title = {Changes in kinematics and aerodynamics over a range of speeds in \emph{Tadarida brasiliensis}, the {B}razilian free-tailed bat},
    Volume = {9},
    Year = {2012},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1098/rsif.2011.0838}}
  • [DOI] D. K. Riskin, A. Bergou, K. S. Breuer, and S. M. Swartz, “Upstroke wing flexion and the inertial cost of bat flight,” Proc. Roy. Soc. B., vol. 279, iss. 1740, pp. 2945-2950, 2012.
    [Bibtex]
    @article{Riskin2012,
    Abstract = {Flying vertebrates change the shapes of their wings during the upstroke, thereby decreasing wing surface area and bringing the wings closer to the body than during downstroke. These, and other wing deformations, might reduce the inertial cost of the upstroke compared with what it would be if the wings remained fully extended. However, wing deformations themselves entail energetic costs that could exceed any inertial energy savings. Using a model that incorporates detailed three-dimensional wing kinematics, we estimated the inertial cost of flapping flight for six bat species spanning a 40-fold range of body masses. We estimate that folding and unfolding comprises roughly 44 per cent of the inertial cost, but that the total inertial cost is only approximately 65 per cent of what it would be if the wing remained extended and rigid throughout the wingbeat cycle. Folding and unfolding occurred mostly during the upstroke; hence, our model suggests inertial cost of the upstroke is not less than that of downstroke. The cost of accelerating the metacarpals and phalanges accounted for around 44 per cent of inertial costs, although those elements constitute only 12 per cent of wing weight. This highlights the energetic benefit afforded to bats by the decreased mineralization of the distal wing bones.},
    Author = {Riskin, Daniel K. and Bergou, Attila and Breuer, Kenneth S. and Swartz, Sharon M.},
    Date-Added = {2012-04-12 14:16:35 +0000},
    Date-Modified = {2017-01-04 19:00:47 +0000},
    Doi = {10.1098/rspb.2012.0346},
    Eprint = {http://rspb.royalsocietypublishing.org/content/early/2012/04/10/rspb.2012.0346.full.pdf+html},
    Journal = prsb,
    Number = {1740},
    Pages = {2945-2950},
    Title = {Upstroke wing flexion and the inertial cost of bat flight},
    Url = {http://rspb.royalsocietypublishing.org/content/early/2012/04/10/rspb.2012.0346.abstract},
    Volume = {279},
    Year = {2012},
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    Bdsk-Url-1 = {http://rspb.royalsocietypublishing.org/content/early/2012/04/10/rspb.2012.0346.abstract},
    Bdsk-Url-2 = {http://dx.doi.org/10.1098/rspb.2012.0346}}
  • [DOI] R. M. Waldman and K. S. Breuer, “Accurate measurement of streamwise vortices using dual-plane PIV,” Expt. Fluids, vol. 53, iss. 5, pp. 1487-1500, 2012.
    [Bibtex]
    @article{Waldman2012,
    Author = {Rye M. Waldman and Kenneth S. Breuer},
    Date-Added = {2012-09-25 13:23:39 +0000},
    Date-Modified = {2012-12-29 23:15:00 +0000},
    Doi = {10.1007/s00348-012-1368-3},
    Journal = expfl,
    Number = {5},
    Pages = {1487-1500},
    Title = {Accurate measurement of streamwise vortices using dual-plane {PIV}},
    Volume = {53},
    Year = {2012},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1007/s00348-012-1368-3}}
  • [DOI] T. S. Yu, J. Park, H. Lim, and K. S. Breuer, “Fog Deposition and Accumulation on Smooth and Textured Hydrophobic Surfaces,” Langmuir, vol. 28, iss. 35, pp. 12771-12778, 2012.
    [Bibtex]
    @article{Yu2012,
    Abstract = { We investigated the deposition and accumulation of droplets on both smooth substrates and substrates textured with square pillars, which were tens of micrometers in size. After being coated with a hydrophobic monolayer, substrates were placed in an air flow with a sedimenting suspension of micrometer-sized water droplets (i.e., fog). We imaged the accumulation of water and measured the evolution of the mean drop size. On smooth substrates, the deposition process was qualitatively similar to condensation, but differences in length scale revealed a transient regime not reported in condensation experiments. Based on previous simulation results, we defined a time-scale characterizing the transition to steady-state behavior. On textured substrates, square pillars promoted spatial ordering of accumulated drops. Furthermore, texture regulated drop growth: first enhancing coalescence when the mean drop size was smaller than the pillar, and then inhibiting coalescence when drops were comparable to the pillar size. This inhibition led to a monodisperse drop regime, in which drop sizes varied by less than 5%. When these monodisperse drops grew sufficiently large, they coalesced and could either remain suspended on pillars (i.e., Cassie-Baxter state) or wet the substrate (i.e., Wenzel state). },
    Author = {Yu, Tony S. and Park, Joonsik and Lim, Hyuneui and Breuer, Kenneth S.},
    Date-Added = {2013-02-04 01:12:29 +0000},
    Date-Modified = {2013-02-04 01:12:39 +0000},
    Doi = {10.1021/la301901m},
    Eprint = {http://pubs.acs.org/doi/pdf/10.1021/la301901m},
    Journal = {Langmuir},
    Number = {35},
    Pages = {12771-12778},
    Title = {Fog Deposition and Accumulation on Smooth and Textured Hydrophobic Surfaces},
    Url = {http://pubs.acs.org/doi/abs/10.1021/la301901m},
    Volume = {28},
    Year = {2012},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1021/la301901m}}

2011

  • [DOI] B. Liu, T. R. Powers, and K. S. Breuer, “Force-free swimming of a model helical flagellum in viscoelastic fluids,” Proc. Nat. Acad. Sci., vol. 108, iss. 49, pp. 19516-19520, 2011.
    [Bibtex]
    @article{Liu2011,
    Abstract = {We precisely measure the force-free swimming speed of a rotating helix in viscous and viscoelastic fluids. The fluids are highly viscous to replicate the low Reynolds number environment of microorganisms. The helix, a macroscopic scale model for the bacterial flagellar filament, is rigid and rotated at a constant rate while simultaneously translated along its axis. By adjusting the translation speed to make the net hydrodynamic force vanish, we measure the force-free swimming speed as a function of helix rotation rate, helix geometry, and fluid properties. We compare our measurements of the force-free swimming speed of a helix in a high-molecular weight silicone oil with predictions for the swimming speed in a {Newtonian} fluid, calculated using slender-body theories and a boundary-element method. The excellent agreement between theory and experiment in the {Newtonian} case verifies the high accuracy of our experiments. For the viscoelastic fluid, we use a polymer solution of polyisobutylene dissolved in polybutene. This solution is a Boger fluid, a viscoselastic fluid with a shear-rate-independent viscosity. The elasticity is dominated by a single relaxation time. When the relaxation time is short compared to the rotation period, the viscoelastic swimming speed is close to the viscous swimming speed. As the relaxation time increases, the viscoelastic swimming speed increases relative to the viscous speed, reaching a peak when the relaxation time is comparable to the rotation period. As the relaxation time is further increased, the viscoelastic swimming speed decreases and eventually falls below the viscous swimming speed.},
    Address = {2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA},
    Author = {Liu, Bin and Powers, Thomas R. and Breuer, Kenneth S.},
    Date-Added = {2012-02-12 05:48:53 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {10.1073/pnas.1113082108},
    Isi = {000297683800024},
    Isi-Recid = {202294900},
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    Journal = pnas,
    Keywords = {motility; propulsion; rheology},
    Month = dec,
    Number = {49},
    Pages = {19516-19520},
    Publisher = {NATL ACAD SCIENCES},
    Times-Cited = {0},
    Title = {Force-free swimming of a model helical flagellum in viscoelastic fluids},
    Volume = {108},
    Year = {2011},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1073/pnas.1113082108}}
  • [DOI] D. Willis, J. Bahlman, K. Breuer, and S. Swartz, “Energetically Optimal Short-Range Gliding Trajectories for Gliding Animals,” AIAA J., vol. 49, iss. 12, pp. 2650-2657, 2011.
    [Bibtex]
    @article{Willis2011,
    Abstract = {Maximum range in steady-state glides is achieved when the lift coefficient is chosen to maximize the lift-to-drag ratio. Whether or not this same steady-state result applies to animal gliders is examined. Because animal gliders spend relatively little time in the air and glide relatively short distances, it is expected that the transient behavior at the beginning and end of the glide will govern their performance. A time-dependent, two-dimensional computational dynamics model is used to predict-glide trajectories for biologically inspired gliders. The results demonstrate that glide range is greatest when the lift coefficient does not correspond to that predicted by classical steady-state gliding theory. This indicates that the transient dynamics of short-range gliders are important in maximizing their range.},
    Address = {1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA},
    Author = {Willis, David and Bahlman, Joseph and Breuer, Kenneth and Swartz, Sharon},
    Date-Added = {2012-04-12 14:21:58 +0000},
    Date-Modified = {2012-05-18 12:43:22 +0000},
    Doi = {DOI 10.2514/1.J051070},
    Isi = {000297968200006},
    Isi-Recid = {202520016},
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    Journal = aiaaj,
    Month = dec,
    Number = {12},
    Pages = {2650-2657},
    Publisher = {AMER INST AERONAUT ASTRONAUT},
    Times-Cited = {0},
    Title = {Energetically Optimal Short-Range Gliding Trajectories for Gliding Animals},
    Type = {Proceedings Paper},
    Volume = {49},
    Year = {2011},
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    Bdsk-Url-2 = {http://dx.doi.org/10.2514/1.J051070}}
  • [DOI] J. Iriarte-Diaz, D. K. Riskin, D. J. Willis, K. S. Breuer, and S. M. Swartz, “Whole-body kinematics of a fruit bat reveal the influence of wing inertia on body accelerations,” J. Expt. Bio., vol. 214, iss. 9, pp. 1546-1553, 2011.
    [Bibtex]
    @article{Iriarte-Diaz2011,
    Abstract = {The center of mass (COM) of a flying animal accelerates through space because of aerodynamic and gravitational forces. For vertebrates, changes in the position of a landmark on the body have been widely used to estimate net aerodynamic forces. The flapping of relatively massive wings, however, might induce inertial forces that cause markers on the body to move independently of the COM, thus making them unreliable indicators of aerodynamic force. We used high-speed three-dimensional kinematics from wind tunnel flights of four lesser dog-faced fruit bats, Cynopterus brachyotis, at speeds ranging from 2.4 to 7.8. m. s(-1) to construct a time-varying model of the mass distribution of the bats and to estimate changes in the position of their COM through time. We compared accelerations calculated by markers on the trunk with accelerations calculated from the estimated COM and we found significant inertial effects on both horizontal and vertical accelerations. We discuss the effect of these inertial accelerations on the long-held idea that, during slow flights, bats accelerate their COM forward during 'tip-reversal upstrokes', whereby the distal portion of the wing moves upward and backward with respect to still air. This idea has been supported by the observation that markers placed on the body accelerate forward during tip-reversal upstrokes. As in previously published studies, we observed that markers on the trunk accelerated forward during the tip-reversal upstrokes. When removing inertial effects, however, we found that the COM accelerated forward primarily during the downstroke. These results highlight the crucial importance of the incorporation of inertial effects of wing motion in the analysis of flapping flight.},
    Address = {BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL, CAMBS, ENGLAND},
    Author = {Iriarte-Diaz, Jose and Riskin, Daniel K. and Willis, David J. and Breuer, Kenneth S. and Swartz, Sharon M.},
    Date-Added = {2012-02-14 11:44:12 +0000},
    Date-Modified = {2013-01-12 22:00:05 +0000},
    Doi = {DOI 10.1242/jeb.037804},
    Isi = {000289477400022},
    Isi-Recid = {196867835},
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    Journal = jeb,
    Keywords = {flight; inertia; kinematics; upstroke; bat; center of mass},
    Month = may,
    Number = {9},
    Pages = {1546-1553},
    Publisher = {COMPANY OF BIOLOGISTS LTD},
    Times-Cited = {1},
    Title = {Whole-body kinematics of a fruit bat reveal the influence of wing inertia on body accelerations},
    Volume = {214},
    Year = {2011},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1242/jeb.037804}}
  • [DOI] L. C. MacAyeal, D. K. Riskin, S. M. Swartz, and K. S. Breuer, “Climbing flight performance and load carrying in lesser dog-faced fruit bats (\emphCynopterus brachyotis),” J. Expt. Bio., vol. 214, iss. 5, pp. 786-793, 2011.
    [Bibtex]
    @article{MacAyeal2011,
    Abstract = {The metabolic cost of flight increases with mass, so animals that fly tend to exhibit morphological traits that reduce body weight. However, all flying animals must sometimes fly while carrying loads. Load carrying is especially relevant for bats, which experience nightly and seasonal fluctuations in body mass of 40\% or more. In this study, we examined how the climbing flight performance of fruit bats (Cynopterus brachyotis; N=4) was affected by added loads. The body weights of animals were experimentally increased by 0, 7, 14 or 21\% by means of intra-peritoneal injections of saline solution, and flights were recorded as animals flew upwards in a small enclosure. Using a model based on actuator disk theory, we estimated the mechanical power expended by the bats as they flew and separated that cost into different components, including the estimated costs of hovering, climbing and increasing kinetic energy. We found that even our most heavily loaded bats were capable of upward flight, but as the magnitude of the load increased, flight performance diminished. Although the cost of flight increased with loading, bats did not vary total induced power across loading treatment. This resulted in a diminished vertical velocity and thus shallower climbing angle with increased loads. Among trials there was considerable variation in power production, and those with greater power production tended to exhibit higher wingbeat frequencies and lower wing stroke amplitudes than trials with lower power production. Changes in stroke plane angle, downstroke wingtip velocity and wing extension did not correlate significantly with changes in power output. We thus observed the manner in which bats modulated power output through changes in kinematics and conclude that the bats in our study did not respond to increases in loading with increased power output because their typical kinematics already resulted in sufficient aerodynamic power to accommodate even a 21\% increase in body weight.},
    Address = {BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL, CAMBS, ENGLAND},
    Author = {MacAyeal, Leigh C. and Riskin, Daniel K. and Swartz, Sharon M. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 11:44:15 +0000},
    Date-Modified = {2012-12-23 21:32:19 +0000},
    Doi = {DOI 10.1242/jeb.050195},
    Isi = {000287130200019},
    Isi-Recid = {194684132},
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    Journal = jeb,
    Keywords = {bat; climbing flight; power},
    Month = mar,
    Number = {5},
    Pages = {786-793},
    Publisher = {COMPANY OF BIOLOGISTS LTD},
    Times-Cited = {0},
    Title = {Climbing flight performance and load carrying in lesser dog-faced fruit bats (\emph{Cynopterus brachyotis})},
    Volume = {214},
    Year = {2011},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1242/jeb.050195}}
  • R. Albertani, T. Hubel, S. M. Swartz, K. S. Breuer, and J. Evers, “In-Flight Wing-Membrane Strain Measurements on Bats,” Expt & Appl. Mech., vol. 6, pp. 437-445, 2011.
    [Bibtex]
    @article{Albertani2011,
    Author = {Albertani, R. and Hubel, T. and Swartz, S.M. and Breuer, K.S. and Evers, J.},
    Date-Added = {2012-10-08 19:25:10 +0000},
    Date-Modified = {2017-01-04 19:01:55 +0000},
    Journal = {Expt \& Appl. Mech.},
    Pages = {437-445},
    Publisher = {Springer},
    Title = {In-Flight Wing-Membrane Strain Measurements on Bats},
    Volume = {6},
    Year = {2011},
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  • [DOI] B. Qian and K. S. Breuer, “The motion, stability and breakup of a stretching liquid bridge with a receding contact line,” J. Fluid. Mech., vol. 666, pp. 554-572, 2011.
    [Bibtex]
    @article{Qian2011,
    Abstract = {The complex behaviour of drop deposition on a hydrophobic surface is considered by looking at a model problem in which the evolution of a constant-volume liquid bridge is studied as the bridge is stretched. The bridge is pinned with a fixed diameter at the upper contact point, but the contact line at the lower attachment point is free to move on a smooth substrate. Experiments indicate that initially, as the bridge is stretched, the lower contact line slowly retreats inward. However, at a critical radius, the bridge becomes unstable, and the contact line accelerates dramatically, moving inward very quickly. The bridge subsequently pinches off, and a small droplet is left on the substrate. A quasi-static analysis, using the Young-Laplace equation, is used to accurately predict the shape of the bridge during the initial bridge evolution, including the initial onset of the slow contact line retraction. A stability analysis is used to predict the onset of pinch-off, and a one-dimensional dynamical equation, coupled with a Tanner law for the dynamic contact angle, is used to model the rapid pinch-off behaviour. Excellent agreement between numerical predictions and experiments is found throughout the bridge evolution, and the importance of the dynamic contact line model is demonstrated.},
    Address = {32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA},
    Author = {Qian, Bian and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:13:21 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1017/S0022112010004611},
    Isi = {000287053100021},
    Isi-Recid = {194684584},
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    Journal = jfm,
    Keywords = {instability; liquid bridges},
    Month = jan,
    Pages = {554-572},
    Publisher = {CAMBRIDGE UNIV PRESS},
    Times-Cited = {2},
    Title = {The motion, stability and breakup of a stretching liquid bridge with a receding contact line},
    Volume = {666},
    Year = {2011},
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    Bdsk-Url-2 = {http://rl3tp7zf5x.search.serialssolutions.com/?&url_ver=Z39.88-2004&url_ctx_fmt=info:ofi/fmt:kev:mtx:ctx&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=The%20motion%2C%20stability%20and%20breakup%20of%20a%20stretching%20liquid%20bridge%20with%20a%20receding%20contact%20line&rft.aufirst=Bian&rft.aulast=Qian&rft.date=2011&rft.epage=572&rft.genre=article&rft.issn=0022-1120&rft.jtitle=JOURNAL%20OF%20FLUID%20MECHANICS&rft.pages=554-572&rft.spage=554&rft.stitle=J%20FLUID%20MECH&rft.volume=666&rfr_id=info:sid/www.isinet.com:WoK:WOS&rft.au=Breuer%2C%20Kenneth%20S%2E&rft_id=info:doi/10%2E1017%2FS0022112010004611},
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2010

  • [DOI] D. K. Riskin, J. Iriarte-Diaz, K. M. Middleton, K. S. Breuer, and S. M. Swartz, “The effect of body size on the wing movements of pteropodid bats, with insights into thrust and lift production,” J. Expt. Bio., vol. 213, iss. 23, pp. 4110-4122, 2010.
    [Bibtex]
    @article{Riskin2010,
    Abstract = {In this study we compared the wing kinematics of 27 bats representing six pteropodid species ranging more than 40 times in body mass (M-b=0.0278-1.152.kg), to determine whether wing posture and overall wing kinematics scaled as predicted according to theory. The smallest species flew in a wind tunnel and the other five species in a flight corridor. Seventeen kinematic markers on the midline and left side of the body were tracked in three dimensions. We used phylogenetically informed reduced major axis regression to test for allometry. We found that maximum wingspan (b(max)) and maximum wing area (S-max) scaled with more positive allometry, and wing loading (Q(s)) with more negative allometry (b(max)alpha M-b(0.423); S-max alpha M-b(0.768); Q(s)alpha M-b(0.233)) than has been reported in previous studies that were based on measurements from specimens stretched out flat on a horizontal surface. Our results suggest that larger bats open their wings more fully than small bats do in flight, and that for bats, body measurements alone cannot be used to predict the conformation of the wings in flight. Several kinematic variables, including downstroke ratio, wing stroke amplitude, stroke plane angle, wing camber and Strouhal number, did not change significantly with body size, demonstrating that many aspects of wing kinematics are similar across this range of body sizes. Whereas aerodynamic theory suggests that preferred flight speed should increase with mass, we did not observe an increase in preferred flight speed with mass. Instead, larger bats had higher lift coefficients (C-L) than did small bats (C-L alpha M-b(0.170)). Also, the slope of the wingbeat period (T) to body mass regression was significantly more shallow than expected under isometry (T alpha M-b(0.180)), and angle of attack (alpha) increased significantly with body mass [a alpha log(M-b)7.738]. None of the bats in our study flew at constant speed, so we used multiple regression to isolate the changes in wing kinematics that correlated with changes in flight speed, horizontal acceleration and vertical acceleration. We uncovered several significant trends that were consistent among species. Our results demonstrate that for medium- to large-sized bats, the ways that bats modulate their wing kinematics to produce thrust and lift over the course of a wingbeat cycle are independent of body size.},
    Address = {BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL, CAMBS, ENGLAND},
    Author = {Riskin, Daniel K. and Iriarte-Diaz, Jose and Middleton, Kevin M. and Breuer, Kenneth S. and Swartz, Sharon M.},
    Date-Added = {2012-02-14 11:44:18 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1242/jeb.043091},
    Isi = {000284146400028},
    Isi-Recid = {193022420},
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    Journal = jeb,
    Keywords = {allometry; bats; Cynopterus brachyotis; Eidolon helvum; flight; isometry; kinematics; Pteropus hypomelanus; Pteropus pumilus; Pteropus vampyrus; Rousettus aegyptiacus; scaling},
    Month = dec,
    Number = {23},
    Pages = {4110-4122},
    Publisher = {COMPANY OF BIOLOGISTS LTD},
    Times-Cited = {3},
    Title = {The effect of body size on the wing movements of pteropodid bats, with insights into thrust and lift production},
    Volume = {213},
    Year = {2010},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1242/jeb.043091}}
  • [DOI] T. Y. Hubel, D. K. Riskin, S. M. Swartz, and K. S. Breuer, “Wake structure and wing kinematics: the flight of the lesser dog-faced fruit bat, \emphCynopterus brachyotis,” J. Expt. Bio., vol. 213, iss. 20, pp. 3427-3440, 2010.
    [Bibtex]
    @article{Hubel2010,
    Abstract = {We investigated the detailed kinematics and wake structure of lesser dog-faced fruit bats (Cynopterus brachyotis) flying in a wind tunnel. High speed recordings of the kinematics were conducted to obtain three-dimensional reconstructions of wing movements. Simultaneously, the flow structure in the spanwise plane perpendicular to the flow stream was visualized using time-resolved particle image velocimetry. The flight of four individuals was investigated to reveal patterns in kinematics and wake structure typical for lower and higher speeds. The wake structure identified as typical for both speed categories was a closed-loop ring vortex consisting of the tip vortex and the limited appearance of a counter-rotating vortex near the body, as well as a small distally located vortex system at the end of the upstroke that generated negative lift. We also investigated the degree of consistency within trials and looked at individual variation in flight parameters, and found distinct differences between individuals as well as within individuals.},
    Address = {BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL, CAMBS, ENGLAND},
    Author = {Hubel, Tatjana Y. and Riskin, Daniel K. and Swartz, Sharon M. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 11:44:20 +0000},
    Date-Modified = {2012-12-23 21:31:45 +0000},
    Doi = {DOI 10.1242/jeb.043257},
    Isi = {000282541800006},
    Isi-Recid = {192118977},
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    Journal = jeb,
    Keywords = {bat flight; kinematics; wake structure},
    Month = oct,
    Number = {20},
    Pages = {3427-3440},
    Publisher = {COMPANY OF BIOLOGISTS LTD},
    Times-Cited = {5},
    Title = {Wake structure and wing kinematics: the flight of the lesser dog-faced fruit bat, \emph{Cynopterus brachyotis}},
    Volume = {213},
    Year = {2010},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1242/jeb.043257}}
  • [DOI] M. Molki and K. Breuer, “Oscillatory motions of a prestrained compliant membrane caused by fluid-membrane interaction,” J. Fluids & Struct., vol. 26, iss. 3, pp. 339-358, 2010.
    [Bibtex]
    @article{Molki2010,
    Abstract = {Flow over a compliant membrane is a complex problem where the interaction between fluid and membrane determines the nature of the aerodynamic characteristics of the membrane wing. This investigation is concerned with the deformation and oscillatory motion of a membrane under aerodynamic loading. The approach is computational. but the analytical solution is also presented for a constant pressure loading. The computational results are compared with the experimental data available in the literature as well as with the present analytical solution. In this study, the values of Reynolds number are 38 416 and 141 500, and the angle of attack and prestrain range from 10 degrees to 40 degrees and from 0 to 0.074, respectively. This range of parameters makes the outcome of the investigation more relevant to applications involving the flight of micro air vehicles and the membrane wings of flying mammals such as bats. The computations indicate a mostly asymmetric deflection with the point of maximum camber located nearly at 40\% of the chord length from the leading edge. The deflection is decreased with prestrain, and it is increased with Reynolds number. Moreover, the lift coefficient generally increases with the angle of attack. However, for Re = 141 500. it increases first to a peak at 20-30 degrees angle of attack, and then decreases. The drag coefficient is much higher than that of conventional airfoils. The membrane oscillates in the streamwise and vertical directions. The largest amplitude of oscillations is observed at 40 degrees For Re = 38 416. The oscillations are caused by the oscillatory nature of the flow due to fluid membrane interaction and the formation of the leading edge and trailing edge vortices. Compared with a rigid membrane of the same camber, the compliant membrane has a smaller recirculation region which may lead to a delayed stall. (C) 2009 Elsevier Ltd. All rights reserved.},
    Address = {24-28 OVAL RD, LONDON NW1 7DX, ENGLAND},
    Author = {Molki, M. and Breuer, K.},
    Date-Added = {2012-02-14 15:13:50 +0000},
    Date-Modified = {2015-08-13 16:53:30 +0000},
    Doi = {DOI 10.1016/j.jfluidstructs.2009.11.003},
    Isi = {000278419800001},
    Isi-Recid = {189316645},
    Isi-Ref-Recids = {189316646 189316647 58756689 155597096 157646188 51259425 126545485 100634648 145804863 129471083 189316648 40187026 189316649 189316650 175653339 149306053 98376814 189316651},
    Journal = jfs,
    Keywords = {Flexible membrane; Deflection; Vortex; Prestrain; Oscillation},
    Month = apr,
    Number = {3},
    Pages = {339-358},
    Publisher = {ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD},
    Times-Cited = {0},
    Title = {Oscillatory motions of a prestrained compliant membrane caused by fluid-membrane interaction},
    Volume = {26},
    Year = {2010},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1016/j.jfluidstructs.2009.11.003}}

2009

  • [DOI] J. S. Guasto and K. S. Breuer, “High-speed quantum dot tracking and velocimetry using evanescent wave illumination,” Expt. Fluids, vol. 47, iss. 6, pp. 1059-1066, 2009.
    [Bibtex]
    @article{Guasto2009,
    Abstract = {Total internal reflection velocimetry (TIRV) is applied to measure the dynamics of 17 nm diameter, colloidal quantum dot (QD) tracer particles within 200 nm of a microchannel wall at shear rates in excess of 20,000 s(-1). QDs are quickly developing into viable tracer particles for measuring microscale fluid dynamics. However, the low emission intensities of QDs usually require long exposure and inter-frame times, which limit velocity resolution and compromise accuracy (due to their fast diffusion as a consequence of a small diameter). In this study, a two-stage, high-speed image intensifier and camera were integrated into an evanescent wave microscopy imaging system. This provided the necessary temporal resolution to image the fast diffusion dynamics of QDs in real-time (up to 10,000 fps), which allowed individual particles to be tracked continuously for extended periods of time. In addition to examining the trajectories of individual particles, ensemble-averaged tracking measurements reveal near-wall velocity distributions in high-speed microchannel flows (Re similar to 10), where velocities on the order of 5 mm/s are measured within 200 nm of the microchannel wall. This data provides a robust confirmation of recent results demonstrating diffusion-induced bias error for near-wall velocimetry.},
    Address = {233 SPRING ST, NEW YORK, NY 10013 USA},
    Author = {Guasto, Jeffrey S. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:15:43 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1007/s00348-009-0700-z},
    Isi = {000271979700013},
    Isi-Recid = {184871211},
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    Journal = expfl,
    Month = dec,
    Number = {6},
    Pages = {1059-1066},
    Publisher = {SPRINGER},
    Times-Cited = {2},
    Title = {High-speed quantum dot tracking and velocimetry using evanescent wave illumination},
    Volume = {47},
    Year = {2009},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-009-0700-z}}
  • [DOI] B. Qian, H. Jiang, D. A. Gagnon, K. S. Breuer, and T. R. Powers, “Minimal model for synchronization induced by hydrodynamic interactions,” Phys. Rev. E., vol. 80, iss. 6, p. 61919, 2009.
    [Bibtex]
    @article{Qian2009,
    Abstract = {Motivated by the observed coordination of nearby beating cilia, we use a scale model experiment to show that hydrodynamic interactions can cause synchronization between rotating paddles driven at constant torque in a very viscous fluid. Synchronization is only observed when the shafts supporting the paddles have some flexibility. The phase difference in the synchronized state depends on the symmetry of the paddles. We use the method of regularized Stokeslets to model the paddles and find excellent agreement with the experimental observations. We also use a simple analytic theory based on far-field approximations to derive scaling laws for the synchronization time as a function of paddle separation.},
    Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
    Author = {Qian, Bian and Jiang, Hongyuan and Gagnon, David A. and Breuer, Kenneth S. and Powers, Thomas R.},
    Date-Added = {2012-02-14 15:15:58 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {DOI 10.1103/PhysRevE.80.061919},
    Isi = {000273227500102},
    Isi-Recid = {185759223},
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    Journal = pre,
    Keywords = {cell motility; hydrodynamics; synchronisation},
    Month = dec,
    Number = {6},
    Pages = {061919},
    Publisher = {AMER PHYSICAL SOC},
    Times-Cited = {14},
    Title = {Minimal model for synchronization induced by hydrodynamic interactions},
    Volume = {80},
    Year = {2009},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1103/PhysRevE.80.061919}}
  • [DOI] P. Huang, J. S. Guasto, and K. S. Breuer, “The effects of hindered mobility and depletion of particles in near-wall shear flows and the implications for nanovelocimetry,” J. Fluid. Mech., vol. 637, pp. 241-265, 2009.
    [Bibtex]
    @article{Huang2009,
    Abstract = {The behaviour of spherical Brownian particles in a near-wall shear flow is explored using Langevin simulations and experimental measurements, focusing on the effects of anisotropic hindered particle mobility and the formation of a particle depletion layer due to repulsive forces. The results are discussed in the context of particle velocity distributions obtained by near-wall image-based velocimetry. It is observed that the shear force and dispersion dominate at high Peclet number (Pe>3), and the asymmetric shapes of particle velocity distributions are attributed to broken symmetry due to the presence of the wall. Furthermore, the excursions outside the observation depth between image acquisitions and the shear-induced slowdowns of tracer particles cause significant measurement bias for long and short inter-frame time intervals, respectively. Also impeding the measurement accuracy is the existence of a near-wall particle depletion layer that leads to an overestimation of the fluid velocity. An analytical protocol to infer the correct fluid velocity from biased measurements is presented.},
    Address = {32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA},
    Author = {Huang, Peter and Guasto, Jeffrey S. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:01 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1017/S0022112009990656},
    Isi = {000271675200008},
    Isi-Recid = {184739013},
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    Journal = jfm,
    Month = oct,
    Pages = {241-265},
    Publisher = {CAMBRIDGE UNIV PRESS},
    Times-Cited = {7},
    Title = {The effects of hindered mobility and depletion of particles in near-wall shear flows and the implications for nanovelocimetry},
    Volume = {637},
    Year = {2009},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1017/S0022112009990656}}
  • [DOI] B. Qian, M. Loureiro, D. A. Gagnon, A. Tripathi, and K. S. Breuer, “Micron-Scale Droplet Deposition on a Hydrophobic Surface Using a Retreating Syringe,” Phys Rev. Lett., vol. 102, iss. 16, p. 164502, 2009.
    [Bibtex]
    @article{Qian2009:droplet,
    Abstract = {Droplet deposition onto a hydrophobic surface is studied experimentally and numerically. A wide range of droplet sizes can result from the same syringe, depending strongly on the needle retraction speed. Three regimes are identified according to the motion of the contact line. In region I, at slow retraction speeds, the contact line expands and large droplets can be achieved. In region II, at moderate needle speeds, a quasicylindrical liquid bridge forms resulting in drops approximately the size of the needle. Finally, at high speeds (region III), the contact line retracts and droplets much smaller than the syringe diameter are observed. Scaling arguments are presented identifying the dominant mechanisms in each regime. Results from nonlinear numerical simulations agree well with the experiments, although the accuracy of the predictions is limited by inadequate models for the behavior of the dynamic contact angle.},
    Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
    Author = {Qian, Bian and Loureiro, Melissa and Gagnon, David A. and Tripathi, Anubhav and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:15:48 +0000},
    Date-Modified = {2012-03-30 01:54:24 +0000},
    Doi = {DOI 10.1103/PhysRevLett.102.164502},
    Isi = {000265479300031},
    Isi-Recid = {180033997},
    Isi-Ref-Recids = {173660831 137462060 134782366 87641472 132656273 19443731 159449656 148980240 114914394 141973608 53114526 148834474 180033998 180033999 7394608 101125320 154393717 118631221 98768693 188412230},
    Journal = prl,
    Month = apr,
    Number = {16},
    Pages = {164502},
    Publisher = {AMER PHYSICAL SOC},
    Times-Cited = {8},
    Title = {Micron-Scale Droplet Deposition on a Hydrophobic Surface Using a Retreating Syringe},
    Volume = {102},
    Year = {2009},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1103/PhysRevLett.102.164502}}
  • [DOI] T. Y. Hubel, N. I. Hristov, S. M. Swartz, and K. S. Breuer, “Time-resolved wake structure and kinematics of bat flight,” Expt. Fluids, vol. 46, iss. 5, pp. 933-943, 2009.
    [Bibtex]
    @article{Hubel2009,
    Author = {Hubel, Tatjana Y and Hristov, Nickolay I and Swartz, Sharon M and Breuer, Kenneth S},
    Date-Added = {2010-06-18T13:13:52GMT+00:00},
    Date-Modified = {2013-10-27 02:57:47 +0000},
    Doi = {10.1007/s00348-009-0624-7},
    Journal = expfl,
    Language = {English},
    Local-Url = {file://localhost/Users/kenny/Dropbox/References/Papers2/Articles/Hubel/2009/Hubel%202009%20Exp.%20Fluids-2.pdf},
    Month = feb,
    Number = {5},
    Pages = {933-943},
    Rating = {0},
    Read = {Yes},
    Title = {{Time-resolved wake structure and kinematics of bat flight}},
    Uri = {\url{papers2://publication/doi/10.1007/s00348-009-0624-7}},
    Url = {http://www.springerlink.com/index/10.1007/s00348-009-0624-7},
    Volume = {46},
    Year = {2009},
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    Bdsk-Url-1 = {http://www.springerlink.com/index/10.1007/s00348-009-0624-7},
    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-009-0624-7}}

2008

  • [DOI] D. K. Riskin, D. J. Willis, J. Iriarte-Diaz, T. L. Hedrick, M. Kostandov, J. Chen, D. H. Laidlaw, K. S. Breuer, and S. M. Swartz, “Quantifying the complexity of bat wing kinematics,” J. Theo. Bio., vol. 254, iss. 3, pp. 604-615, 2008.
    [Bibtex]
    @article{Riskin2008,
    Abstract = {Body motions (kinematics) of animals can be dimensionally complex, especially when flexible parts of the body interact with a surrounding fluid. In these systems, tracking motion completely can be difficult, and result in a large number of correlated measurements, with unclear contributions of each parameter to performance. Workers typically get around this by deciding a priori which variables are important (wing camber, stroke amplitude, etc.), and focusing only on those variables, but this constrains the ability of a Study to uncover variables of influence. Here, we describe ail application of proper orthogonal decomposition (POD) for assigning importances to kinematic variables, using dimensional complexity as a metric. We apply this method to bat flight kinematics, addressing three questions: (I) Does dimensional complexity of motion change with speed? (2) What body markers are optimal for capturing dimensional complexity? (3) What variables should a simplified reconstruction of bat flight include in order to maximally reconstruct actual dimensional complexity? We measured the motions of 17 kinematic markers (20 joint angles) on a bat (Cynopterus brachyotis) flying in a wind tunnel at nine speeds. Dimensional complexity did not change with flight speed, despite changes in the kinematics themselves, suggesting that the relative efficacy of a given number of dimensions for reconstructing kinematics is conserved across speeds. By looking at subsets of the full 17-marker set, we found that using more markers improved resolution of kinematic dimensional complexity, but that the benefit of adding markers diminished as the total number of markers increased. Dimensional complexity was highest when the hindlimb and several points along digits III and IV were tracked. Also, we uncovered three groups of joints that move together during flight by using POD to quantify correlations of motion. These groups describe 14/20 joint angles, and provide a framework for models of bat flight for experimental and modeling purposes. (c) 2008 Elsevier Ltd. All rights reserved.},
    Address = {24-28 OVAL RD, LONDON NW1 7DX, ENGLAND},
    Author = {Riskin, Daniel K. and Willis, David J. and Iriarte-Diaz, Jose and Hedrick, Tyson L. and Kostandov, Mykhaylo and Chen, Jian and Laidlaw, David H. and Breuer, Kenneth S. and Swartz, Sharon M.},
    Date-Added = {2012-02-14 11:44:40 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1016/j.jtbi.2008.06.011},
    Isi = {000259758700014},
    Isi-Recid = {173705639},
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    Journal = jtb,
    Keywords = {proper orthogonal decomposition; kinematic markers; joint angles},
    Month = oct,
    Number = {3},
    Pages = {604-615},
    Publisher = {ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD},
    Times-Cited = {13},
    Title = {Quantifying the complexity of bat wing kinematics},
    Volume = {254},
    Year = {2008},
    Bdsk-File-1 = {YnBsaXN0MDDSAQIDBFxyZWxhdGl2ZVBhdGhZYWxpYXNEYXRhXxBHLi4vRHJvcGJveCAoQnJvd24pL1JlZmVyZW5jZXMvUGFwZXJzL1Jpc2tpbi9SaXNraW4gMjAwOCBRdWFudGlmeWluZy5wZGZPEQHAAAAAAAHAAAIAAAxNYWNpbnRvc2ggSEQAAAAAAAAAAAAAAAAAAAAAAAAAQkQAAf////8bUmlza2luIDIwMDggUXVhbnRpZnlpbmcucGRmAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/////wAAAAAAAAAAAAAAAAABAAUAAAogY3UAAAAAAAAAAAAAAAAABlJpc2tpbgACAFgvOlVzZXJzOmtlbm55YnJldWVyOkRyb3Bib3ggKEJyb3duKTpSZWZlcmVuY2VzOlBhcGVyczpSaXNraW46Umlza2luIDIwMDggUXVhbnRpZnlpbmcucGRmAA4AOAAbAFIAaQBzAGsAaQBuACAAMgAwADAAOAAgAFEAdQBhAG4AdABpAGYAeQBpAG4AZwAuAHAAZABmAA8AGgAMAE0AYQBjAGkAbgB0AG8AcwBoACAASABEABIAVlVzZXJzL2tlbm55YnJldWVyL0Ryb3Bib3ggKEJyb3duKS9SZWZlcmVuY2VzL1BhcGVycy9SaXNraW4vUmlza2luIDIwMDggUXVhbnRpZnlpbmcucGRmABMAAS8AABUAAgAS//8AAAAIAA0AGgAkAG4AAAAAAAACAQAAAAAAAAAFAAAAAAAAAAAAAAAAAAACMg==},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1016/j.jtbi.2008.06.011}}
  • [DOI] A. Song, X. Tian, E. Israeli, R. Galvao, K. Bishop, S. Swartz, and K. Breuer, “Aeromechanics of Membrane Wings with Implications for Animal Flight,” AIAA J., vol. 46, pp. 2096-2106, 2008.
    [Bibtex]
    @article{Song2008,
    Abstract = {Not Available},
    Annote = {ISI Document Delivery No.: 335HM
    Times Cited: 1
    Cited Reference Count: 33
    Song, Arnold Tian, Xiaodong Israeli, Emily Galvao, Ricardo Bishop, Kristin Swartz, Sharon Breuer, Kenneth},
    Author = {Song, Arnold and Tian, Xiaodong and Israeli, Emily and Galvao, Ricardo and Bishop, Kristin and Swartz, Sharon and Breuer, Kenneth},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2016-06-06 21:04:28 +0000},
    Doi = {10.2514/1.36694},
    Journal = aiaaj,
    Month = aug,
    Pages = {2096-2106},
    Rating = {0},
    Read = {Yes},
    Title = {{Aeromechanics of Membrane Wings with Implications for Animal Flight}},
    Volume = {46},
    Year = {2008},
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  • [DOI] J. S. Guasto and K. S. Breuer, “Simultaneous, ensemble-averaged measurement of near-wall temperature and velocity in steady micro-flows using single quantum dot tracking,” Expt. Fluids, vol. 45, iss. 1, pp. 157-166, 2008.
    [Bibtex]
    @article{Guasto2008,
    Abstract = {We present results from a series of experiments demonstrating the use of single quantum dots (QDs) as simultaneous temperature and velocity probes at the micro-scale. The fluorescence intensity of QDs varies predictably with temperature due to changes in quantum efficiency. We use total internal reflection fluorescence microscopy to study the region within 200 nm of a fluid-solid interface. A two-color, time-averaged temperature sensing technique based on the ensemble intensity changes of single QDs as compared to a reference dye (rhodamine 110) is presented. Many single QD intensity measurements are used to build intensity distributions which can be mapped to fluid temperature. Simultaneously, we track the motion of individual QDs, building a distribution of particle displacements, where the mean displacement yields the local fluid velocity. We also show that the width of the displacement distribution (or the diffusion coefficient) captures the scaling of the temperature to viscosity ratio, which may allow for independent viscosity measurement.},
    Address = {233 SPRING ST, NEW YORK, NY 10013 USA},
    Author = {Guasto, Jeffrey S. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:16 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1007/s00348-008-0471-y},
    Isi = {000256755500012},
    Isi-Recid = {163201317},
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    Journal = expfl,
    Month = jul,
    Number = {1},
    Pages = {157-166},
    Publisher = {SPRINGER},
    Times-Cited = {8},
    Title = {Simultaneous, ensemble-averaged measurement of near-wall temperature and velocity in steady micro-flows using single quantum dot tracking},
    Volume = {45},
    Year = {2008},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-008-0471-y}}
  • [DOI] B. Qian, T. R. Powers, and K. S. Breuer, “Shape transition and propulsive force of an elastic rod rotating in a viscous fluid,” Phys Rev. Lett., vol. 100, iss. 7, p. 78101, 2008.
    [Bibtex]
    @article{Qian2008,
    Abstract = {The deformation of an elastic rod rotating in a viscous fluid is considered, with applications related to flagellar motility. The rod is tilted relative to the rotation axis, and experiments and theory are used to study the shape transition when driven either at constant torque or at constant speed. At low applied torque, the rod bends gently and generates small propulsive force. At a critical torque, the rotation speed increases abruptly, and the rod forms a helical shape with increased propulsive force. We find good agreement between theory and experiment. A simple physical model is presented to capture and explain the essential behavior.},
    Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
    Author = {Qian, Bian and Powers, Thomas R. and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:18 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {DOI 10.1103/PhysRevLett.100.078101},
    Isi = {000253336900075},
    Isi-Recid = {160957051},
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    Journal = prl,
    Month = feb,
    Number = {7},
    Pages = {078101},
    Publisher = {AMER PHYSICAL SOC},
    Times-Cited = {20},
    Title = {Shape transition and propulsive force of an elastic rod rotating in a viscous fluid},
    Volume = {100},
    Year = {2008},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1103/PhysRevLett.100.078101}}
  • [DOI] M. J. Kim and K. S. Breuer, “Microfluidic pump powered by self-organizing bacteria,” Small, vol. 4, iss. 1, pp. 111-118, 2008.
    [Bibtex]
    @article{Kim2008,
    Abstract = {Results are presented that demonstrate the successful use of live bacteria as mechanical actuators in microfabricated fluid systems. The flow deposition of bacteria is used to create a motile bacterial carpet that can generate local fluid motion inside a microfabricated system. By tracking the motion of tracer particles, we demonstrate that the bacterial cells that comprise the carpet self-organize, generating a collective fluid motion that can pump fluid autonomously through a microfabricated channel at speeds as high as 25 mu m s(-1). The pumping performance of the system can also be augmented by changing the chemical environment. The addition of glucose to the working buffer raises the metabolic activity of the bacterial carpet, resulting in increased pumping performance. The Performance of the bacterial pump is also shown to be strongly influenced by the global geometry of the pump, with narrower channels achieving a higher pumping velocity with a faster rise time.},
    Address = {PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY},
    Author = {Kim, Min Jun and Breuer, Kenneth S.},
    Date-Added = {2012-03-30 01:50:45 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {DOI 10.1002/smll.200700641},
    Isi = {000253778100018},
    Isi-Recid = {161299438},
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    Journal = {Small},
    Keywords = {biological motors; cell motility; metabolic activity; microfluidics; stimuli-responsive materials},
    Month = jan,
    Number = {1},
    Pages = {111-118},
    Publisher = {WILEY-V C H VERLAG GMBH},
    Times-Cited = {20},
    Title = {Microfluidic pump powered by self-organizing bacteria},
    Volume = {4},
    Year = {2008},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1002/smll.200700641}}
  • [DOI] B. J. Schmidt, P. Huang, K. S. Breuer, and M. B. Lawrence, “Catch Strip Assay for the Relative Assessment of Two-Dimensional Protein Association Kinetics,” Analytical Chemistry, vol. 80, iss. 4, pp. 944-950, 2008.
    [Bibtex]
    @article{Schmidt2008,
    Abstract = { Accurate interpretation of recruitment rate measurements of microscale particles, such as cells and microbeads, to biofunctional surfaces is difficult because factors such as uneven ligand distributions, particle collisions, variable particle fluxes, and molecular-scale surface separation distances obfuscate the ability to link the observed particle behavior with the governing nanoscale biophysics. We report the development of a hydrodynamically conditioned micropattern catch strip assay to measure microparticle recruitment kinetics. The assay exploited patterning within microfluidic channels and the mechanostability of selectin bonds to create reaction geometries that confined a microbead flux to within 200 nm of the surface under flow conditions. Systematic control of capillary action enabled the creation of homogeneous or gradient ligand distributions. The method enabled the measurement of particle recruitment rates (keff, s-1) that were primarily determined by the interaction of the biomolecular pair being investigated. The method is therefore well suited for relative measurements of delivery vehicle and cellular recruitment potential as governed by surface-bound molecules. },
    Author = {Schmidt, Brian J. and Huang, Peter and Breuer, Kenneth S. and Lawrence, Michael B.},
    Date-Added = {2012-12-29 05:20:25 +0000},
    Date-Modified = {2012-12-29 05:20:29 +0000},
    Doi = {10.1021/ac071529i},
    Eprint = {http://pubs.acs.org/doi/pdf/10.1021/ac071529i},
    Journal = {Analytical Chemistry},
    Note = {PMID: 18217724},
    Number = {4},
    Pages = {944-950},
    Title = {Catch Strip Assay for the Relative Assessment of Two-Dimensional Protein Association Kinetics},
    Url = {http://pubs.acs.org/doi/abs/10.1021/ac071529i},
    Volume = {80},
    Year = {2008},
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    Bdsk-Url-1 = {http://pubs.acs.org/doi/abs/10.1021/ac071529i},
    Bdsk-Url-2 = {http://dx.doi.org/10.1021/ac071529i}}

2007

  • [DOI] P. Huang and K. S. Breuer, “Direct measurement of anisotropic near-wall hindered diffusion using total internal reflection velocimetry,” Phys. Rev. E., vol. 76, iss. 4, p. 46307, 2007.
    [Bibtex]
    @article{Huang2007,
    Abstract = {By applying the three-dimensional total internal reflection velocimetry (3D-TIRV) technique to freely suspended micron-sized fluorescent particles, we are able to simultaneously observe the three-dimensional anisotropic hindered diffusion for values of the gap-size-to-radius ratio much less than one. We demonstrate that the 3D-TIRV can be used to accurately track freely suspended 1.5-mu m radius particles. The displacement measurements reveal that the hindered diffusion coefficients are in close agreement with the theoretical values predicted by the asymptotic solutions of Brenner [Chem. Eng. Sci. 16, 242 (1961)] and Goldman [Chem. Eng. Sci. 22, 637 (1967)] for gap-size-to-radius ratio much less than one, while hindered diffusion anisotropicity is simultaneously observed in all data sets.},
    Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
    Author = {Huang, Peter and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:17:00 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1103/PhysRevE.76.046307},
    Isi = {000250622100061},
    Isi-Recid = {159605225},
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    Journal = pre,
    Month = oct,
    Number = {4},
    Pages = {046307},
    Publisher = {AMER PHYSICAL SOC},
    Times-Cited = {12},
    Title = {Direct measurement of anisotropic near-wall hindered diffusion using total internal reflection velocimetry},
    Volume = {76},
    Year = {2007},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1103/PhysRevE.76.046307}}
  • [DOI] G. D. Jay, J. R. Torres, M. L. Warman, M. C. Laderer, and K. S. Breuer, “The role of lubricin in the mechanical behavior of synovial fluid,” Proc. Nat. Acad. Sci., vol. 104, iss. 15, pp. 6194-6199, 2007.
    [Bibtex]
    @article{Jay2007,
    Abstract = {Synovial fluid is a semidilute hyaluronate (HA) polymer solution, the rheology of which depends on HA-protein interactions, and lubricin is a HA-binding protein found in synovial fluid and at cartilage surfaces, where it contributes to boundary lubrication under load. Individuals ...},
    Author = {Jay, G D and Torres, J R and Warman, M L and Laderer, M C and Breuer, K S},
    Date-Added = {2011-06-24T17:07:39GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1073/pnas.0608558104},
    Journal = pnas,
    Language = {English},
    Local-Url = {file://localhost/Users/kenny/Dropbox/References/Papers2/Articles/Jay/2007/Jay%202007%20Proc.%20Nat.%20Acad.%20Sci.pdf},
    Month = apr,
    Number = {15},
    Pages = {6194-6199},
    Rating = {0},
    Title = {{The role of lubricin in the mechanical behavior of synovial fluid}},
    Uri = {\url{papers2://publication/doi/10.1073/pnas.0608558104}},
    Url = {http://www.pnas.org/cgi/doi/10.1073/pnas.0608558104},
    Volume = {104},
    Year = {2007},
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  • [DOI] M. J. Kim and K. S. Breuer, “Use of bacterial carpets to enhance mixing in microfluidic systems,” J. Fluids Engineering-Transactions of the ASME, vol. 129, iss. 3, pp. 319-324, 2007.
    [Bibtex]
    @article{Kim2007,
    Abstract = {We demonstrate that flagellated bacteria can be utilized in surface arrays (carpets) to achieve mixing in a low-Reynolds number fluidic environment. The mixing performance of the system is quantified by measuring the diffusion of small tracer particles. We show that the mixing performance responds to modifications to the chemical and thermal environment of the system, which affects the metabolic activity of the bacteria. Although the mixing performance can be increased by the addition of glucose (food) to the surrounding buffer or by raising the buffer temperature, the initial augmentation is also accompanied by a faster decay in mixing performance, due to falling pH and oxygen starvation, both induced by the higher metabolic activity of the bacterial system.},
    Address = {THREE PARK AVE, NEW YORK, NY 10016-5990 USA},
    Author = {Kim, Min Jun and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:23 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {DOI 10.1115/1.2427083},
    Isi = {000245300900008},
    Isi-Recid = {155238151},
    Isi-Ref-Recids = {52956544 86883232 73809517 130582651 109545141 155238152 133523895 107914063 148964740 115588844 21679142 29814549 32240632 122807864 135949531 134592435 123261414 134592437 114301930},
    Journal = {J. Fluids Engineering-Transactions of the ASME},
    Keywords = {Serratia marcescens; microfluidics; mixing; diffusion bacterial carpet; glucose; temperature},
    Month = mar,
    Number = {3},
    Pages = {319-324},
    Publisher = {ASME-AMER SOC MECHANICAL ENG},
    Times-Cited = {22},
    Title = {Use of bacterial carpets to enhance mixing in microfluidic systems},
    Volume = {129},
    Year = {2007},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1115/1.2427083}}
  • [DOI] P. Huang and K. S. Breuer, “Direct measurement of slip length in electrolyte solutions,” Phys. Fluids., vol. 19, iss. 2, p. 28104, 2007.
    [Bibtex]
    @article{Huang2007:electrolyte,
    Abstract = {Electrokinetic effects and electrostatic repulsion between tracer particles and glass surface have both been proposed as possible sources that would lead to false slip results obtained from velocimetry-based measurements. Using a three-dimensional total internal reflection velocimetry technique, we address such a concern by comparing the measured slip lengths between nonionic solutions and electrolyte solutions whose ionic concentrations have been predicted to reduce the electricity-induced slip effect to a submolecular level. It is observed that the presence of electrolytes has no effect on the measured slip lengths, suggesting that the observed slip velocities are most likely not due to electrostatic and electrokinetic effects, but are consequences of true boundary slip.(c) 2007 American Institute of Physics.},
    Address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
    Author = {Huang, Peter and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:27 +0000},
    Date-Modified = {2012-03-30 01:55:02 +0000},
    Doi = {DOI 10.1063/1.2539829},
    Isi = {000244531200027},
    Isi-Recid = {158692374},
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    Journal = pf,
    Month = feb,
    Number = {2},
    Pages = {028104},
    Publisher = {AMER INST PHYSICS},
    Times-Cited = {20},
    Title = {Direct measurement of slip length in electrolyte solutions},
    Volume = {19},
    Year = {2007},
    Bdsk-File-1 = {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},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.2539829}}
  • [DOI] M. J. Kim and K. S. Breuer, “Controlled mixing in microfluidic systems using bacterial chemotaxis,” Analytical Chemistry, vol. 79, iss. 3, pp. 955-959, 2007.
    [Bibtex]
    @article{Kim2007:Controlled,
    Abstract = {We demonstrate the use of Escherichia coli and their chemotactic characteristics to enhance mixing in a microchannel in a controlled and bi-directional manner. The presence of a chemoattractant in one arm of a three-junction microchannel results in an asymmetric increase in the effective diffusion coefficient of extremely high molecular weight TMR-Dextran (MW 2 000 000), which rises linearly with the concentration of attractant from a baseline value of 8-42 mu m(2)/s at a concentration of 0.1 M. The response to a repellent is similar, with the opposite bias.},
    Address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
    Author = {Kim, Min Jun and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:16:57 +0000},
    Date-Modified = {2015-03-25 14:37:06 +0000},
    Doi = {DOI 10.1021/ac0614691},
    Isi = {000243839900016},
    Isi-Recid = {154229274},
    Isi-Ref-Recids = {154229275 86883232 130582651 23803588 27916409 45344060 118216355 118538650 111244979 133523895 149207838 146306531 126023109 132277355 154229276 154229277 154229278 115588844 154229279 29814549 129394899 154229280 125229217 143087127 129702838 120110203 114301930},
    Journal = {Analytical Chemistry},
    Month = feb,
    Number = {3},
    Pages = {955-959},
    Publisher = {AMER CHEMICAL SOC},
    Times-Cited = {21},
    Title = {Controlled mixing in microfluidic systems using bacterial chemotaxis},
    Volume = {79},
    Year = {2007},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1021/ac0614691}}
  • [DOI] R. C. Henry, R. J. Hansman, and K. S. Breuer, “Heat transfer variation on protuberances and surface roughness elements,” Journal of Thermophysics and Heat Transfer, vol. 9, iss. 1, p. 175–180, 2007.
    [Bibtex]
    @article{Henry2007,
    Annote = {doi: 10.2514/3.644},
    Author = {Henry, Robert C. and Hansman, R. J. and Breuer, Kenneth S.},
    Booktitle = {Journal of Thermophysics and Heat Transfer},
    Da = {1995/01/01},
    Date = {2007/04/23},
    Date-Added = {2015-01-01 20:13:31 +0000},
    Date-Modified = {2015-01-01 20:13:31 +0000},
    Doi = {10.2514/3.644},
    Isbn = {0887-8722},
    Journal = {Journal of Thermophysics and Heat Transfer},
    Journal1 = {Journal of Thermophysics and Heat Transfer},
    M3 = {doi: 10.2514/3.644},
    Month = {2015/01/01},
    Number = {1},
    Pages = {175--180},
    Publisher = {American Institute of Aeronautics and Astronautics},
    Title = {Heat transfer variation on protuberances and surface roughness elements},
    Ty = {JOUR},
    Url = {http://dx.doi.org/10.2514/3.644},
    Volume = {9},
    Year = {2007},
    Year1 = {2007},
    Bdsk-Url-1 = {http://dx.doi.org/10.2514/3.644}}

2006

  • [DOI] J. S. Guasto, P. Huang, and K. S. Breuer, “Statistical particle tracking velocimetry using molecular and quantum dot tracer particles,” Expt. Fluids, vol. 41, iss. 6, pp. 869-880, 2006.
    [Bibtex]
    @article{Guasto2006,
    Abstract = {We present a statistical approach to particle tracking velocimetry developed to treat the issues associated with nanometer-sized tracer particles such as fluorescent molecules and quantum dots (QDs) along with theory and experimental results. Extremely small tracers pose problems to traditional tracking methods due to high levels of thermal motion, high levels of intensified camera noise, high drop-in/drop-out rates and, in the case of QDs, fluorescence intermittency ("blinking"). The algorithm presented here compensates for these problems in a statistical manner and determines the physical velocity distributions from measured particle displacement distributions by statistically removing randomly distributed, non-physical tracking events. The algorithm is verified with both numerically simulated particle trackings and experiments using 54 nm diameter fluorescent dextran molecules and 6 and 16 nm diameter QDs.},
    Address = {233 SPRING STREET, NEW YORK, NY 10013 USA},
    Author = {Guasto, Jeffrey S. and Huang, Peter and Breuer, Kenneth S.},
    Date-Added = {2012-02-14 15:17:05 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1007/s00348-006-0202-1},
    Isi = {000246203700004},
    Isi-Recid = {156080214},
    Isi-Ref-Recids = {74759269 128868041 108031525 156080215 121659581 126863406 156080216 133243824 153164731 102131291 137488929 152491953 53494124 116845199 131229659 97934638 147806486 95279290 14138 134198970 156080217},
    Journal = expfl,
    Month = dec,
    Number = {6},
    Pages = {869-880},
    Publisher = {SPRINGER},
    Times-Cited = {20},
    Title = {Statistical particle tracking velocimetry using molecular and quantum dot tracer particles},
    Volume = {41},
    Year = {2006},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-006-0202-1}}
  • [DOI] X. Tian, J. Iriarte-Diaz, K. Middleton, R. Galvao, E. Israeli, A. Roemer, A. Sullivan, A. Song, S. Swartz, and K. Breuer, “Direct measurements of the kinematics and dynamics of bat flight,” Bioinsp. and Biomim., vol. 1, iss. 4, p. S10-S18, 2006.
    [Bibtex]
    @article{Tian2006,
    Abstract = {Experimental measurements and analysis of the flight of bats are presented, including kinematic analysis of high-speed stereo videography of straight and turning flight, and measurements of the wake velocity field behind the bat. The kinematic data reveal that, at relatively slow flight speeds, wing motion is quite complex, including a sharp retraction of the wing during the upstroke and a broad sweep of the partially extended wing during the downstroke. The data also indicate that the flight speed and elevation are not constant, but oscillate in synchrony with both the horizontal and vertical movements of the wing. PIV measurements in the transverse (Trefftz) plane of the wake indicate a complex 'wake vortex' structure dominated by a strong wing tip vortex shed from the wing tip during the downstroke and either the wing tip or a more proximal joint during the upstroke. Data synthesis of several discrete realizations suggests a 'cartoon' of the wake structure during the entire wing beat cycle. Considerable work remains to be done to confirm and amplify these results.},
    Affiliation = {[Tian, Xiaodong; Iriarte-Diaz, Jose; Middleton, Kevin; Galvao, Ricardo; Israeli, Emily; Roemer, Abigail; Sullivan, Allyce; Song, Arnold; Swartz, Sharon; Breuer, Kenneth] Brown Univ, Providence, RI 02912 USA. Tian, XD, Brown Univ, Providence, RI 02912 USA. kbreuer@brown.edu},
    Annote = {ISI Document Delivery No.: V06BV
    Times Cited: 14
    Cited Reference Count: 43
    Tian, Xiaodong Iriarte-Diaz, Jose Middleton, Kevin Galvao, Ricardo Israeli, Emily Roemer, Abigail Sullivan, Allyce Song, Arnold Swartz, Sharon Breuer, Kenneth
    Sp. Iss. SI},
    Author = {Tian, X and Iriarte-Diaz, J and Middleton, K and Galvao, R and Israeli, E and Roemer, A and Sullivan, A and Song, A and Swartz, S and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1088/1748-3182/1/4/s02},
    Journal = bb,
    Month = dec,
    Number = {4},
    Pages = {S10-S18},
    Rating = {0},
    Title = {{Direct measurements of the kinematics and dynamics of bat flight}},
    Uri = {\url{papers2://publication/doi/10.1088/1748-3182/1/4/s02}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000207170000003},
    Volume = {1},
    Year = {2006},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1088/1748-3182/1/4/s02}}
  • [DOI] P. Huang, J. S. Guasto, and K. S. Breuer, “Direct measurement of slip velocities using three-dimensional total internal reflection velocimetry,” J. Fluid. Mech., vol. 566, p. 447, 2006.
    [Bibtex]
    @article{Huang2006,
    Abstract = {The existence and magnitude of slip velocities between deionized water and a smooth glass surface is studied experimentally. Sub-micron fluorescent particles are suspended in water and imaged using total internal reflection velocimetry (TIRV). For water flowing over a ...},
    Author = {Huang, Peter and Guasto, Jeffrey S and Breuer, Kenneth S},
    Date-Added = {2011-06-24T17:05:39GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1017/S0022112006002229},
    Journal = jfm,
    Language = {English},
    Local-Url = {file://localhost/Users/kenny/Dropbox/References/Papers2/Articles/Huang/2006/Huang%202006%20J.%20Fluid%20Mech.pdf},
    Month = oct,
    Pages = {447},
    Rating = {0},
    Title = {{Direct measurement of slip velocities using three-dimensional total internal reflection velocimetry}},
    Uri = {\url{papers2://publication/doi/10.1017/S0022112006002229}},
    Url = {http://www.journals.cambridge.org/abstract_S0022112006002229},
    Volume = {566},
    Year = {2006},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1017/S0022112006002229}}
  • [DOI] D. K. Yi, M. J. Kim, L. Turner, K. S. Breuer, and D. Kim, “Colloid lithography-induced polydimethylsiloxane microstructures and their application to cell patterning.,” Biotech. Lett., vol. 28, iss. 3, pp. 169-173, 2006.
    [Bibtex]
    @article{Yi2006,
    Abstract = {Colloidal lithography was used to make a novel array (2-D) of micro-rings, dots, and interconnected-honeycomb structures. These geometries are controlled using the curing temperature-dependent rheological properties of the siloxane elastomer precursor. Serratia marcescens was patterned on the interconnected honeycomb microstructure demonstrating a potential application for microbioanalytical devices, microfluidics, and bio-micro-electromechanical systems.},
    Affiliation = {Institute of Bioengineering and Nanotechnology, Singapore, 138669, Singapore.},
    Author = {Yi, Dong Kee and Kim, Min Jun and Turner, Linda and Breuer, Kenneth S and Kim, Dong-Yu},
    Date-Added = {2010-06-18T13:14:05GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1007/s10529-005-5331-8},
    Journal = {Biotech. Lett.},
    Language = {English},
    Month = feb,
    Number = {3},
    Pages = {169-173},
    Pmid = {16489494},
    Rating = {0},
    Title = {{Colloid lithography-induced polydimethylsiloxane microstructures and their application to cell patterning.}},
    Uri = {\url{papers2://publication/doi/10.1007/s10529-005-5331-8}},
    Url = {http://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=16489494&retmode=ref&cmd=prlinks},
    Volume = {28},
    Year = {2006},
    Bdsk-Url-1 = {http://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=16489494&retmode=ref&cmd=prlinks},
    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s10529-005-5331-8}}

2005

  • [DOI] P. Kwok, M. Weinberg, and K. Breuer, “Fluid effects in vibrating micromachined structures,” J. Microelectromechanical Systems, vol. 14, iss. 4, pp. 770-781, 2005.
    [Bibtex]
    @article{Kwok2005,
    Author = {Kwok, P and Weinberg, M and Breuer, K},
    Date-Added = {2010-06-18T13:13:58GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1109/mems.2005.845425},
    Journal = {J. Microelectromechanical Systems},
    Month = aug,
    Number = {4},
    Pages = {770-781},
    Rating = {0},
    Title = {{Fluid effects in vibrating micromachined structures}},
    Uri = {\url{papers2://publication/doi/10.1109/mems.2005.845425}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000231126300015},
    Volume = {14},
    Year = {2005},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1109/mems.2005.845425}}
  • [DOI] L. Frechette, S. Jacobson, K. Breuer, F. Ehrich, R. Ghodssi, R. Khanna, C. Wong, X. Zhang, M. Schmidt, and A. Epstein, “High-speed microfabricated silicon turbomachinery and fluid film bearings,” J. Microelectromechanical Systems, vol. 14, iss. 1, pp. 141-152, 2005.
    [Bibtex]
    @article{Frechette2005,
    Abstract = {A single-crystal silicon micromachined air turbine supported on gas-lubricated bearings has been operated in a controlled and sustained manner at rotational speeds greater than 1 million revolutions per minute, with mechanical power levels approaching 5 W. The device is formed from a fusion bonded stack of five silicon wafers individually patterned on both sides using deep reactive ion etching (DRIE). It consists of a single stage radial inflow turbine on a 4.2-mm diameter rotor that is supported on externally pressurized hydrostatic journal and thrust bearings. This paper presents the design, fabrication, and testing of the first microfabricated rotors to operate at circumferential tip speeds up to 300 m/s, on the order of conventional high performance turbomachinery. Successful operation of this device motivates the use of silicon micromachined high-speed rotating machinery for power microelectromechanical systems (MEMS) applications such as portable energy conversion, micropropulsion, and microfluidic pumping and cooling.},
    Address = {445 HOES LANE, PISCATAWAY, NJ 08855 USA},
    Author = {Frechette, LG and Jacobson, SA and Breuer, KS and Ehrich, FF and Ghodssi, R and Khanna, R and Wong, CW and Zhang, X and Schmidt, MA and Epstein, AH},
    Date-Added = {2012-02-14 15:17:12 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1109/JMEMES.2004.839008},
    Isi = {000226965200016},
    Isi-Recid = {142826611},
    Isi-Ref-Recids = {142826612 142826613 119280510 90436088 142826614 135184584 142826615 123062604 71308016 135184585 142826616 142826617 142826618 142826619 142826620 120866716 135184606 118373591 131446340 108169477 142826621 142826622 110931191 99311769 131110931 87819310 142826623},
    Journal = {J. Microelectromechanical Systems},
    Keywords = {bearings; lubrication; microengines; microturbine; power MEMS; turbomachinery},
    Month = feb,
    Number = {1},
    Pages = {141-152},
    Publisher = {IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC},
    Times-Cited = {46},
    Title = {High-speed microfabricated silicon turbomachinery and fluid film bearings},
    Volume = {14},
    Year = {2005},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1109/JMEMES.2004.839008}}
  • [DOI] J. W. Bae, K. S. Breuer, and C. S. Tan, “Active Control of Tip Clearance Flow in Axial Compressors,” J. Turbomachinery, vol. 127, iss. 2, pp. 352-362, 2005.
    [Bibtex]
    @article{Bae2005,
    Author = {Jin Woo Bae and Kenneth S. Breuer and Choon S. Tan},
    Date-Added = {2012-12-29 22:58:12 +0000},
    Date-Modified = {2012-12-29 22:58:24 +0000},
    Doi = {10.1115/1.1776584},
    Journal = {J. Turbomachinery},
    Keywords = {flow control; compressors; flow instability; actuators; jets},
    Number = {2},
    Pages = {352-362},
    Publisher = {ASME},
    Title = {Active Control of Tip Clearance Flow in Axial Compressors},
    Url = {http://link.aip.org/link/?JTM/127/352/1},
    Volume = {127},
    Year = {2005},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1115/1.1776584}}

2004

  • [DOI] S. Jin, P. Huang, J. Park, J. Yoo, and K. Breuer, “Near-surface velocimetry using evanescent wave illumination,” Expt. Fluids, vol. 37, iss. 6, pp. 825-833, 2004.
    [Bibtex]
    @article{Jin2004,
    Abstract = {Total internal reflection velocimetry (TIRV) is used to measure particle motion in the near-wall region of a microfluidic system. TIRV images are illuminated with the evanescent field of an incident laser pulse and contain only particles that are very close to the channel surface. Sub-micron-sized fluorescent particles suspended in water are used as seed particles and their images are analyzed with a particle tracking velocimetry (PTV) algorithm to extract information about apparent slip velocity. At relatively low shear rates (less than 2,500 s(-1)), a velocity proportional to the shear rate was observed. The statistical difference between velocities measured over hydrophilic and hydrophobic surfaces was found to be minimal. The results suggest that the slip length, if present, is less than 10 nm, but uncertainty regarding the exact character of the illumination field prevents a more accurate measurement at this time. Numerical simulations are presented to help understand the results and to provide insight into the mechanisms that result in the experimentally observed distributions. Issues associated with the accuracy of the experimental technique and the interpretations of the experimental results are also discussed.},
    Address = {233 SPRING STREET, NEW YORK, NY 10013 USA},
    Author = {Jin, S and Huang, P and Park, J and Yoo, JY and Breuer, KS},
    Date-Added = {2012-02-14 15:17:24 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1007/s00348-004-0870-7},
    Isi = {000225522800006},
    Isi-Recid = {137488929},
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    Journal = expfl,
    Month = dec,
    Number = {6},
    Pages = {825-833},
    Publisher = {SPRINGER},
    Times-Cited = {52},
    Title = {Near-surface velocimetry using evanescent wave illumination},
    Type = {Proceedings Paper},
    Volume = {37},
    Year = {2004},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-004-0870-7}}
  • [DOI] M. Kim, M. Kim, J. Bird, J. Park, T. Powers, and K. Breuer, “Particle image velocimetry experiments on a macro-scale model for bacterial flagellar bundling,” Expt. Fluids, vol. 37, iss. 6, pp. 782-788, 2004.
    [Bibtex]
    @article{Kim2004:PIV,
    Abstract = {Escherichia coli ( E. coli) and other bacteria are propelled throughwater by several helical flagella, which are rotated by motors embedded at random points on the cell wall. Depending on the handedness and rotation sense, the motion of the flagella induces a flow field that causes them to wrap around each other and form a bundle. Our objective is to understand and model the mechanics of this process. Full-scale flagella are 10 mum in length, 20 nm in diameter, and turn at a rate of 100 Hz. To accurately simulate bundling at a more easily observable scale, we built a scale model in which 20-cm-long helices are rotated in 100,000 cp silicone oil (Poly-di-methyl-siloxane). The highly viscous oil ensures an appropriately low Reynolds number. We developed amacro-scale particle image velocimetry (PIV) system to measure the full-field velocity distribution for rotating rigid helices and rotating flexible helices. In the latter case, the helices were made from epoxy-filled plastic tubing to give approximately the same ratio of elastic to viscous stresses as in the full-scale flagella. Comparison between PIV measurements and slender-body calculations shows good agreement for the case of rigid helices. For the flexible helices, we find that the flow field generated by a bundle in the steady state is well approximated by the flow generated by a single rigid helix with twice the filament radius.},
    Address = {233 SPRING STREET, NEW YORK, NY 10013 USA},
    Author = {Kim, MJ and Kim, MMJ and Bird, JC and Park, J and Powers, TR and Breuer, KS},
    Date-Added = {2012-03-30 01:51:08 +0000},
    Date-Modified = {2015-03-25 14:36:54 +0000},
    Doi = {DOI 10.1007/s00348-004-0848-5},
    Isi = {000225522800002},
    Isi-Recid = {137488901},
    Isi-Ref-Recids = {103202208 86883232 116732112 69965009 132633689 132277355 135494895 103375812 107971623 114814634 114301930},
    Journal = expfl,
    Month = dec,
    Number = {6},
    Pages = {782-788},
    Publisher = {SPRINGER},
    Times-Cited = {13},
    Title = {Particle image velocimetry experiments on a macro-scale model for bacterial flagellar bundling},
    Type = {Proceedings Paper},
    Volume = {37},
    Year = {2004},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-004-0848-5}}
  • [DOI] M. Kim and K. Breuer, “Enhanced diffusion due to motile bacteria,” Phys. Fluids., vol. 16, iss. 9, p. L78-L81, 2004.
    [Bibtex]
    @article{Kim2004,
    Abstract = {The effect of bacterial motion on the diffusion of a molecule of high molecular weight is studied by observing the mixing of two streams of fluid in a microfluidic flow cell. We show that the presence of motile E. coli bacteria in one of the streams results in a marked increase in the effective diffusion coefficient of Dextran, which rises linearly with the concentration of bacteria from a baseline value of 0.2x10(-7) to 0.8x10(-7) (cm(2)/s) at a concentration of 2.1x10(9)/ml (approximately 0.5\% by volume). Furthermore, we observe that the diffusion process is also observed to undergo a change from standard Fickian diffusion to a superdiffusive behavior in which the diffusion exponent rises from 0.5 to 0.55 as the concentration of bacteria rises from 0 to 2.1x10(9)/ml. (C) 2004 American Institute of Physics.},
    Address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
    Author = {Kim, MJ and Breuer, KS},
    Date-Added = {2012-02-14 15:17:20 +0000},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {DOI 10.1063/1.1787527},
    Isi = {000223273600005},
    Isi-Recid = {135973926},
    Isi-Ref-Recids = {21814768 113136715 108031525 111244979 107914063 120782697 132633689 109367331 135973927 120110203 114301930 65397092},
    Journal = pf,
    Month = sep,
    Number = {9},
    Pages = {L78-L81},
    Publisher = {AMER INST PHYSICS},
    Times-Cited = {27},
    Title = {Enhanced diffusion due to motile bacteria},
    Type = {Letter},
    Volume = {16},
    Year = {2004},
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  • [DOI] K. Breuer, J. Park, and C. Henoch, “Actuation and control of a turbulent channel flow using Lorentz forces,” Phys. Fluids., vol. 16, iss. 4, pp. 897-907, 2004.
    [Bibtex]
    @article{Breuer2004,
    Abstract = {Results concerning the design and fabrication of electromagnetic actuators, and their application to affect the wall shear stress in a fully turbulent channel flow are discussed. The actuators utilize a Lorentz force to induce fluid motion due to the interaction between a magnetic field and a current density. The actuators are comprised of spanwise-aligned rows of permanent magnets interlaced with surface-mounted electrodes, segmented to allow the Lorentz force to be propagated in the spanwise direction. Problems commonly associated with electromagnetic flow control-electrolysis, bubble formation, and electrode corrosion are substantially reduced, and in most cases eliminated by the use of a conductive polymer coating. The actuators generate velocity profiles with a penetration depth into the flow of approximately 1 mm (set by the electrode/magnet pitch) and maximum velocities of approximately 4 cm/s. The actuation velocities are found to scale linearly with forcing voltage and frequency. The electrical to mechanical efficiency is found to be very low (approximate to10(-4)), primarily due to the limitations on the magnetic field strength and the low conductivity of the working fluid (saltwater). The actuators are used in a fully turbulent low Reynolds number channel flow and their effect on the turbulent skin friction is measured using a direct measurement of drag. Maximum drag reductions of approximately 10\% are measured when the flow is forced using a spanwise oscillating Lorentz force. A scaling argument for the optimal amplitude of the current density is developed. The efficiency of this method for drag reduction, and its application at higher Reynolds numbers is also discussed. (C) 2004 American Institute of Physics.},
    Address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
    Author = {Breuer, KS and Park, J and Henoch, C},
    Date-Added = {2012-02-14 15:17:18 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1063/1.1647142},
    Isi = {000220091700008},
    Isi-Recid = {133675882},
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    Journal = pf,
    Month = apr,
    Number = {4},
    Pages = {897-907},
    Publisher = {AMER INST PHYSICS},
    Times-Cited = {45},
    Title = {Actuation and control of a turbulent channel flow using Lorentz forces},
    Volume = {16},
    Year = {2004},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.1647142}}
  • [DOI] G. Han, J. Bird, K. Johan, A. Westin, Z. Cao, and K. Breuer, “Infrared diagnostics for measuring fluid and solid motion inside silicon microdevices,” Microscale Thermophysical Engineering, vol. 8, iss. 2, pp. 169-182, 2004.
    [Bibtex]
    @article{Han2004,
    Abstract = {A new velocimetry system has been developed for use in microdevices that incorporate silicon as their structural material. The system is designed to illuminate and measure particle and surface motions using infrared wavelengths, taking advantage of the fact that silicon is largely transmissive to light with wavelength above 1 gm. The system allows the observation of motion inside silicon-based microdevices, which are otherwise opaque to light at visible wavelengths. By analyzing these images using both time-of-flight and phase-locked techniques, quantitative measurements are demonstrated concerning the position and speed of internal surfaces and the motion of fluids inside complex microfabricated devices. The system as demonstrated has a resolution of approximately 360 nm, although higher resolution is possible with future improvements.},
    Address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA},
    Author = {Han, GX and Bird, JC and Johan, K and Westin, A and Cao, ZQ and Breuer, KS},
    Date-Added = {2012-02-14 15:17:26 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1080/10893950490454928},
    Isi = {000221542100007},
    Isi-Recid = {134798877},
    Isi-Ref-Recids = {74759269 104503185 134798878 134798879 119659297 112308055 115494745 107202295 134798880 134798881},
    Journal = {Microscale Thermophysical Engineering},
    Keywords = {infrared; PIV; motion detection},
    Month = {Apr-Jun},
    Number = {2},
    Pages = {169-182},
    Publisher = {TAYLOR \& FRANCIS INC},
    Times-Cited = {8},
    Title = {Infrared diagnostics for measuring fluid and solid motion inside silicon microdevices},
    Volume = {8},
    Year = {2004},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1080/10893950490454928}}
  • [DOI] N. Darnton, L. Turner, K. Breuer, and H. Berg, “Mixing fluids with bacterial carpets,” Biophysical Journal, vol. 86, pp. 1863-1870, 2004.
    [Bibtex]
    @article{Darnton2004,
    Author = {Darnton, N and Turner, L and Breuer, K and Berg, H},
    Date-Added = {2010-09-14T02:06:26GMT+00:00},
    Date-Modified = {2015-03-25 14:35:08 +0000},
    Doi = {10.1016/S0006-3495(04)74253-8},
    Journal = {Biophysical Journal},
    Pages = {1863-1870},
    Rating = {0},
    Title = {{Mixing fluids with bacterial carpets}},
    Uri = {\url{papers2://publication/uuid/85CC9BD3-345A-47B8-B08B-F97288B9AD00}},
    Volume = {86},
    Year = {2004},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1073/pnas.2633596100},
    Bdsk-Url-2 = {http://dx.doi.org/10.1016/S0006-3495(04)74253-8}}

2003

  • [DOI] M. Kim, J. Bird, A. Van Parys, K. Breuer, and T. Powers, “A macroscopic scale model of bacterial flagellar bundling,” Proc. Nat. Acad. Sci., vol. 100, iss. 26, pp. 15481-15485, 2003.
    [Bibtex]
    @article{Kim2003,
    Abstract = {Escherichia coli and other bacteria use rotating helical filaments to swim. Each cell typically has about four filaments, which bundle or disperse depending on the sense of motor rotation. To study the bundling process, we built a macroscopic scale model consisting of stepper motor-driven polymer helices in a tank filled with a high-viscosity silicone oil. The Reynolds number, the ratio of viscous to elastic stresses, and the helix geometry of our experimental model approximately match the corresponding quantities of the full-scale E. coli cells. We analyze digital video images of the rotating helices to show that the initial rate of bundling is proportional to the motor frequency and is independent of the characteristic relaxation time of the filament. We also determine which combinations of helix handedness and sense of motor rotation lead to bundling.},
    Address = {2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA},
    Author = {Kim, M and Bird, JC and Van Parys, AJ and Breuer, KS and Powers, TR},
    Date-Added = {2012-02-14 15:17:32 +0000},
    Date-Modified = {2015-08-13 15:35:59 +0000},
    Doi = {DOI 10.1073/pnas.2633596100},
    Isi = {000187554600037},
    Isi-Recid = {132633689},
    Isi-Ref-Recids = {31017270 85299010 68655234 59752011 21505435 10845785 56835310 65952747 28896572 5023796 95869921 31086296 124473501 31007195 114814634 83644511 105002544},
    Journal = pnas,
    Month = dec,
    Number = {26},
    Pages = {15481-15485},
    Publisher = {NATL ACAD SCIENCES},
    Times-Cited = {41},
    Title = {A macroscopic scale model of bacterial flagellar bundling},
    Volume = {100},
    Year = {2003},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1073/pnas.2633596100}}
  • [DOI] R. Rathnasingham and K. Breuer, “Active control of turbulent boundary layers,” J. Fluid. Mech., vol. 495, pp. 209-233, 2003.
    [Bibtex]
    @article{Rathnasingham2003,
    Author = {Rathnasingham, R and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1017/s0022112003006177},
    Journal = jfm,
    Month = nov,
    Pages = {209-233},
    Rating = {0},
    Title = {{Active control of turbulent boundary layers}},
    Uri = {\url{papers2://publication/doi/10.1017/s0022112003006177}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000187349700012},
    Volume = {495},
    Year = {2003},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1017/s0022112003006177}}
  • [DOI] C. Choi, K. Westin, and K. Breuer, “Apparent slip flows in hydrophilic and hydrophobic microchannels,” Phys. Fluids., vol. 15, iss. 10, pp. 2897-2902, 2003.
    [Bibtex]
    @article{Choi2003,
    Abstract = {The slip effects of water flow in hydrophilic and hydrophobic microchannels of 1 and 2 mum depth are examined experimentally. High-precision microchannels were treated chemically to enhance their hydrophilic and hydrophobic properties. The flow rates of pure water at various applied pressure differences for each surface condition were measured using a high-precision flow metering system and compared to a theoretical model that allows for a slip velocity at the solid surface. The slip length was found to vary approximately linearly with the shear rate with values of approximately 30 nm for the flow of water over hydrophobic surfaces at a shear rate of 10(5) s(-1). The existence of slip over the hydrophilic surface remains uncertain, due to the sensitivity of the current analysis to nanometer uncertainties in the channel height. (C) 2003 American Institute of Physics.},
    Address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
    Author = {Choi, CH and Westin, KJA and Breuer, KS},
    Date-Added = {2012-02-14 15:17:35 +0000},
    Date-Modified = {2012-03-30 01:53:58 +0000},
    Doi = {DOI 10.1063/1.1605425},
    Isi = {000185268200011},
    Isi-Recid = {131242780},
    Isi-Ref-Recids = {120656184 100705903 4955612 81874579 131242781 51466025 120978716 96490131 129051330 71308100 111843821 116093511 131242782 51202623 4024136 131242783 102144939 123531142 17240947 69747910 109378303 130239895 131242784 123874799 121354481 97488379},
    Journal = pf,
    Month = oct,
    Number = {10},
    Pages = {2897-2902},
    Publisher = {AMER INST PHYSICS},
    Times-Cited = {148},
    Title = {Apparent slip flows in hydrophilic and hydrophobic microchannels},
    Volume = {15},
    Year = {2003},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1063/1.1605425}}
  • [DOI] K. J. A. Westin, C. -H. Choi, and K. S. Breuer, “A novel system for measuring liquid flow rates with nanoliter per minute resolution,” Expt. Fluids, vol. 34, iss. 5, pp. 635-642, 2003.
    [Bibtex]
    @article{Westin2003,
    Author = {Westin, K. J. A. and Choi, C.-H. and Breuer, K. S.},
    Date-Added = {2010-06-18T13:14:05GMT+00:00},
    Date-Modified = {2012-12-29 23:07:36 +0000},
    Doi = {10.1007/s00348-003-0610-4},
    Journal = expfl,
    Month = may,
    Number = {5},
    Pages = {635-642},
    Rating = {0},
    Title = {{A novel system for measuring liquid flow rates with nanoliter per minute resolution}},
    Uri = {\url{papers2://publication/doi/10.1007/s00348-003-0610-4}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000183850100012},
    Volume = {34},
    Year = {2003},
    Bdsk-File-1 = {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},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1007/s00348-003-0610-4}}

2002

  • [DOI] E. Piekos and K. Breuer, “Manufacturing effects in microfabricated gas bearings: Axially varying clearance,” J. Tribology – Transactions of the ASME, vol. 124, iss. 4, pp. 815-821, 2002.
    [Bibtex]
    @article{Piekos2002,
    Author = {Piekos, E and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1115/1.1430672},
    Journal = {J. Tribology - Transactions of the ASME},
    Month = oct,
    Number = {4},
    Pages = {815-821},
    Rating = {0},
    Title = {{Manufacturing effects in microfabricated gas bearings: Axially varying clearance}},
    Uri = {\url{papers2://publication/doi/10.1115/1.1430672}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000178565200019},
    Volume = {124},
    Year = {2002},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000178565200019},
    Bdsk-Url-2 = {http://dx.doi.org/10.1115/1.1430672}}
  • [DOI] R. King and K. Breuer, “Oblique transition in a laminar Blasius boundary layer,” J. Fluid. Mech., vol. 453, pp. 177-200, 2002.
    [Bibtex]
    @article{King2002,
    Author = {King, R and Breuer, K},
    Date-Added = {2010-06-18T13:13:58GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1017/s0022112001006826},
    Journal = jfm,
    Month = feb,
    Pages = {177-200},
    Rating = {0},
    Title = {{Oblique transition in a laminar Blasius boundary layer}},
    Uri = {\url{papers2://publication/doi/10.1017/s0022112001006826}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000174452800008},
    Volume = {453},
    Year = {2002},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1017/s0022112001006826}}

2001

  • A. Ayon, R. Bayt, and K. Breuer, “Deep reactive ion etching: a promising technology for micro- and nanosatellites,” Smart Materials & Structures, vol. 10, iss. 6, pp. 1135-1144, 2001.
    [Bibtex]
    @article{Ayon2001,
    Author = {Ayon, A and Bayt, R and Breuer, K},
    Date-Added = {2010-06-18T13:13:32GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {Smart Materials {\&} Structures},
    Month = dec,
    Number = {6},
    Pages = {1135-1144},
    Rating = {0},
    Title = {{Deep reactive ion etching: a promising technology for micro- and nanosatellites}},
    Uri = {\url{papers2://publication/uuid/160B873B-548C-492E-8280-8B08B8A7E13E}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173555900003},
    Volume = {10},
    Year = {2001},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173555900003}}
  • [DOI] E. B. Arkilic, K. S. Breuer, and M. A. Schmidt, “Mass flow and tangential momentum accommodation in silicon micromachined channels,” J. Fluid. Mech., vol. 437, pp. 29-43, 2001.
    [Bibtex]
    @article{Arkilic2001,
    Author = {Arkilic, Errol B. and Breuer, Kenneth S. and Schmidt, Martin A.},
    Date-Added = {2013-02-04 01:27:00 +0000},
    Date-Modified = {2013-02-04 01:28:04 +0000},
    Doi = {10.1017/S0022112001004128},
    Eprint = {http://journals.cambridge.org/article_S0022112001004128},
    Issn = {1469-7645},
    Journal = jfm,
    Month = {5},
    Numpages = {15},
    Pages = {29-43},
    Title = {Mass flow and tangential momentum accommodation in silicon micromachined channels},
    Url = {http://dx.doi.org/10.1017/S0022112001004128},
    Volume = {437},
    Year = {2001},
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    Bdsk-Url-1 = {http://dx.doi.org/10.1017/S0022112001004128}}
  • M. Sheplak, A. Padmanabhan, M. Schmidt, and K. Breuer, “Dynamic calibration of a shear-stress sensor using Stokes-layer excitation,” AIAA J., vol. 39, iss. 5, pp. 819-823, 2001.
    [Bibtex]
    @article{Sheplak2001,
    Author = {Sheplak, M and Padmanabhan, A and Schmidt, M and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2013-10-28 00:49:13 +0000},
    Journal = aiaaj,
    Month = may,
    Number = {5},
    Pages = {819-823},
    Rating = {0},
    Title = {{Dynamic calibration of a shear-stress sensor using {Stokes}-layer excitation}},
    Uri = {\url{papers2://publication/uuid/79A48D19-BD7B-45EC-862B-AAC89A6A6953}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000168611900008},
    Volume = {39},
    Year = {2001},
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  • R. L. Bayt and K. S. Breuer, “Analysis and Testing of a Silicon Intrinsic Point Heater in a Micropropulsion Application,” Sensors and Actuators, vol. 91, iss. 3, pp. 249-255, 2001.
    [Bibtex]
    @article{Bayt2001,
    Author = {Bayt, R. L. and Breuer, K S},
    Date-Added = {2010-09-14T02:06:23GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {Sensors and Actuators},
    Number = {3},
    Pages = {249-255},
    Rating = {0},
    Title = {{Analysis and Testing of a Silicon Intrinsic Point Heater in a Micropropulsion Application}},
    Uri = {\url{papers2://publication/uuid/4CF73B3A-78DA-4CC3-91EB-E770AC934633}},
    Volume = {91},
    Year = {2001}}
  • N. Savoulides, K. Breuer, S. Jacobson, and F. Ehrich, “Low-Order Models for Very Short Hybrid Gas Bearings,” J. Tribology, vol. 123, iss. 2, pp. 368-375, 2001.
    [Bibtex]
    @article{Savoulides2001,
    Author = {Savoulides, N and Breuer, K and Jacobson, S and Ehrich, F},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {J. Tribology},
    Number = {2},
    Pages = {368-375},
    Rating = {0},
    Title = {{Low-Order Models for Very Short Hybrid Gas Bearings}},
    Uri = {\url{papers2://publication/uuid/9229CC2C-44BD-42AF-A149-27E7468F5E94}},
    Url = {http://link.aip.org/link/?JTQ/123/368/1},
    Volume = {123},
    Year = {2001},
    Bdsk-Url-1 = {http://link.aip.org/link/?JTQ/123/368/1}}

2000

  • K. Amonlirdviman and K. Breuer, “Linear predictive filtering in a numerically simulated turbulent flow,” Phys. Fluids., vol. 12, iss. 12, pp. 3221-3228, 2000.
    [Bibtex]
    @article{Amonlirdviman2000,
    Author = {Amonlirdviman, K and Breuer, K},
    Date-Added = {2010-06-18T13:13:32GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = pf,
    Month = dec,
    Number = {12},
    Pages = {3221-3228},
    Rating = {0},
    Title = {{Linear predictive filtering in a numerically simulated turbulent flow}},
    Uri = {\url{papers2://publication/uuid/BB304F66-FDC1-44F4-83E4-6A0AA12F3098}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000165083800012},
    Volume = {12},
    Year = {2000},
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1999

  • E. Piekos and K. Breuer, “Pseudospectral Orbit Simulation of Nonideal Gas-Lubricated Journal Bearings for Microfabricated Turbomachines,” J. Tribology, vol. 121, iss. 3, pp. 604-609, 1999.
    [Bibtex]
    @article{Piekos1999,
    Author = {Piekos, E and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {J. Tribology},
    Number = {3},
    Pages = {604-609},
    Rating = {0},
    Title = {{Pseudospectral Orbit Simulation of Nonideal Gas-Lubricated Journal Bearings for Microfabricated Turbomachines}},
    Uri = {\url{papers2://publication/uuid/32DF8B89-7C16-47FD-9CFE-3358B39D9ECC}},
    Url = {http://link.aip.org/link/?JTQ/121/604/1},
    Volume = {121},
    Year = {1999},
    Bdsk-Url-1 = {http://link.aip.org/link/?JTQ/121/604/1}}

1998

  • E. Arkilic, M. Schmidt, and K. Breuer, “Sub-nanomol per second flow measurement near atmospheric pressure,” Expt. Fluids, vol. 25, iss. 1, pp. 37-41, 1998.
    [Bibtex]
    @article{Arkilic1998,
    Author = {Arkilic, E and Schmidt, M and Breuer, K},
    Date-Added = {2010-06-18T13:13:32GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = expfl,
    Month = jun,
    Number = {1},
    Pages = {37-41},
    Rating = {0},
    Title = {{Sub-nanomol per second flow measurement near atmospheric pressure}},
    Uri = {\url{papers2://publication/uuid/B5DC5610-F9AE-4258-B6B1-8AEED7164690}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000074417000004},
    Volume = {25},
    Year = {1998},
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1997

  • R. Rathnasingham and K. Breuer, “System identification and control of a turbulent boundary layer,” Phys. Fluids., vol. 9, iss. 7, pp. 1867-1869, 1997.
    [Bibtex]
    @article{Rathnasingham1997:systemID,
    Author = {Rathnasingham, R and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:57:15 +0000},
    Journal = pf,
    Month = jul,
    Number = {7},
    Pages = {1867-1869},
    Rating = {0},
    Title = {{System identification and control of a turbulent boundary layer}},
    Uri = {\url{papers2://publication/uuid/A7FD5E27-C42A-4602-BC16-3AF0637801BE}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997XH28700003},
    Volume = {9},
    Year = {1997},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997XH28700003}}
  • [DOI] E. B. Arkilic, M. A. Schmidt, and K. S. Breuer, “Gaseous slip flow in long microchannels,” J. Microelectromechanical Systems, vol. 6, iss. 2, pp. 167-178, 1997.
    [Bibtex]
    @article{Arkilic1997,
    Abstract = {Abstract- An analytic and experimental investigation into gaseous flow with slight rarefaction through long microchan- nels is undertaken. A two-dimensional (2-D) analysis of the Navier-Stokes equations with a first-order slip-velocity boundary condition demonstrates ...},
    Author = {Arkilic, E B and Schmidt, M A and Breuer, K S},
    Date-Added = {2011-06-24T17:04:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Doi = {10.1109/84.585795},
    Journal = {J. Microelectromechanical Systems},
    Language = {English},
    Local-Url = {file://localhost/Users/kenny/Dropbox/References/Papers2/Articles/Arkilic/1997/Arkilic%201997%20Journal%20of%20Microelectromechanical%20Systems.pdf},
    Month = jun,
    Number = {2},
    Pages = {167-178},
    Rating = {0},
    Title = {{Gaseous slip flow in long microchannels}},
    Uri = {\url{papers2://publication/doi/10.1109/84.585795}},
    Url = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=585795},
    Volume = {6},
    Year = {1997},
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    Bdsk-Url-2 = {http://dx.doi.org/10.1109/84.585795}}
  • K. Breuer, J. Cohen, and J. Haritonidis, “The late stages of transition induced by a low-amplitude wavepacket in a laminar boundary layer,” J. Fluid. Mech., vol. 340, pp. 395-411, 1997.
    [Bibtex]
    @article{Breuer1997:wavepacket,
    Author = {Breuer, K and Cohen, J and Haritonidis, J},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2015-03-25 10:09:25 +0000},
    Journal = jfm,
    Month = jun,
    Pages = {395-411},
    Rating = {0},
    Title = {{The late stages of transition induced by a low-amplitude wavepacket in a laminar boundary layer}},
    Uri = {\url{papers2://publication/uuid/743E2B40-2F5B-4E53-8B20-5BA9DC803810}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997XF40100015},
    Volume = {340},
    Year = {1997},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997XF40100015}}
  • R. Rathnasingham and K. Breuer, “Coupled fluid-structural characteristics of actuators for flow control,” AIAA J., vol. 35, iss. 5, pp. 832-837, 1997.
    [Bibtex]
    @article{Rathnasingham1997,
    Author = {Rathnasingham, R and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = aiaaj,
    Month = may,
    Number = {5},
    Pages = {832-837},
    Rating = {0},
    Title = {{Coupled fluid-structural characteristics of actuators for flow control}},
    Uri = {\url{papers2://publication/uuid/29A5D420-F9A9-4027-8190-16CB31B569CA}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997WY03000010},
    Volume = {35},
    Year = {1997},
    Bdsk-File-1 = {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},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1997WY03000010}}

1996

  • A. Padmanabhan, H. Goldberg, K. Breuer, and M. Schmidt, “A wafer-bonded floating-element shear stress microsensor with optical position sensing by photodiodes,” J. Microelectromechanical Systems, vol. 5, iss. 4, pp. 307-315, 1996.
    [Bibtex]
    @article{Padmanabhan1996,
    Abstract = {This paper discusses a noninvasive sensing technique for the direct measurement of low-magnitude shear stresses in laminar and turbulent air Bows. The sensing scheme detects the flow-induced in-plane displacement of a microfabricated floating-element structure (500 mu m x 500 mu m x 7 mu m), using integrated photodiodes. The wall-mounted floating-element sensors were fabricated using a wafer-bonding technology. The sensors were calibrated in a custom-designed laminar flow cell and subsequently shown to be able to transduce shear stresses of 0.01 Pa during tests in a low-speed wind tunnel.},
    Affiliation = {INPUT OUTPUT INC,STAFFORD,TX 77477. MIT,DEPT AERONAUT {\&} ASTRONAUT,CAMBRIDGE,MA 02139. Padmanabhan, A, MIT,MICROSYST TECHNOL LABS,CAMBRIDGE,MA 02139.},
    Annote = {ISI Document Delivery No.: VY413
    Times Cited: 21
    Cited Reference Count: 17},
    Author = {Padmanabhan, A and Goldberg, H and Breuer, K and Schmidt, M},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {J. Microelectromechanical Systems},
    Month = dec,
    Number = {4},
    Pages = {307-315},
    Rating = {0},
    Title = {{A wafer-bonded floating-element shear stress microsensor with optical position sensing by photodiodes}},
    Uri = {\url{papers2://publication/uuid/E438ECFB-559E-4369-B8EC-8BD064A19FB1}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996VY41300010},
    Volume = {5},
    Year = {1996},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996VY41300010}}
  • E. Piekos and K. Breuer, “Numerical modeling of micromechanical devices using the Direct Simulation Monte Carlo method,” J. Fluids Engineering-Transactions of the ASME, vol. 118, iss. 3, pp. 464-469, 1996.
    [Bibtex]
    @article{Piekos1996,
    Author = {Piekos, E and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2013-10-28 00:52:10 +0000},
    Journal = {J. Fluids Engineering-Transactions of the {ASME}},
    Month = sep,
    Number = {3},
    Pages = {464-469},
    Rating = {0},
    Title = {{Numerical modeling of micromechanical devices using the Direct Simulation Monte Carlo method}},
    Uri = {\url{papers2://publication/uuid/BFD1A9DE-8350-4E17-9657-55CAC491B4EB}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996VN19100006},
    Volume = {118},
    Year = {1996},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996VN19100006}}
  • K. Breuer, E. Dzenitis, J. Gunnarsson, and M. Ullmar, “Linear and nonlinear evolution of boundary layer instabilities generated by acoustic-receptivity mechanisms,” Phys. Fluids., vol. 8, iss. 6, pp. 1415-1423, 1996.
    [Bibtex]
    @article{Breuer1996,
    Author = {Breuer, K and Dzenitis, E and Gunnarsson, J and Ullmar, M},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = pf,
    Month = jun,
    Number = {6},
    Pages = {1415-1423},
    Rating = {0},
    Title = {{Linear and nonlinear evolution of boundary layer instabilities generated by acoustic-receptivity mechanisms}},
    Uri = {\url{papers2://publication/uuid/49C2DC59-D434-40D4-BB0A-212F12336735}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996UM41800012},
    Volume = {8},
    Year = {1996},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1996UM41800012}}

1995

  • K. Breuer, “Stochastic Calibration of Sensors in Turbulent Flow Fields,” Expt. Fluids, vol. 19, iss. 2, pp. 138-141, 1995.
    [Bibtex]
    @article{Breuer1995,
    Author = {Breuer, K},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = expfl,
    Month = jun,
    Number = {2},
    Pages = {138-141},
    Rating = {0},
    Title = {{Stochastic Calibration of Sensors in Turbulent Flow Fields}},
    Uri = {\url{papers2://publication/uuid/CF9C54AC-466D-4E83-A702-F869A396C3A8}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995RL62600010},
    Volume = {19},
    Year = {1995},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995RL62600010}}
  • S. Dinavahi, K. Breuer, and L. Sirovich, “Universality of probability density functions in turbulent channel flow,” Phys. Fluids., vol. 7, iss. 5, pp. 1122-1129, 1995.
    [Bibtex]
    @article{Dinavahi1995,
    Author = {Dinavahi, S and Breuer, K and Sirovich, L},
    Date-Added = {2010-06-18T13:13:46GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = pf,
    Month = may,
    Number = {5},
    Pages = {1122-1129},
    Rating = {0},
    Title = {{Universality of probability density functions in turbulent channel flow}},
    Uri = {\url{papers2://publication/uuid/56B9564B-9C2F-4522-A544-E2A0D09AC021}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995QV54400036},
    Volume = {7},
    Year = {1995},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995QV54400036}}
  • R. Henry, R. Hansman, and K. Breuer, “Heat transfer variation on protuberances and surface roughness elements,” J. Thermophysics and Heat Transfer, vol. 9, iss. 1, pp. 175-180, 1995.
    [Bibtex]
    @article{Henry1995,
    Author = {Henry, R and Hansman, R and Breuer, K},
    Date-Added = {2010-06-18T13:13:51GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {J. Thermophysics and Heat Transfer},
    Number = {1},
    Pages = {175-180},
    Rating = {0},
    Title = {{Heat transfer variation on protuberances and surface roughness elements}},
    Uri = {\url{papers2://publication/uuid/91BE7A1D-182D-4FC9-ACC4-9DF2F2B7924E}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995QB29100024},
    Volume = {9},
    Year = {1995},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1995QB29100024}}

1994

  • P. O’Sullivan and K. Breuer, “Transient growth in circular pipe flow. 2. Nonlinear development,” Phys. Fluids., vol. 6, iss. 11, pp. 3652-3664, 1994.
    [Bibtex]
    @article{OSullivan1994:2,
    Author = {O'Sullivan, P and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:57:29 +0000},
    Journal = pf,
    Month = nov,
    Number = {11},
    Pages = {3652-3664},
    Rating = {0},
    Title = {{Transient growth in circular pipe flow. 2. Nonlinear development}},
    Uri = {\url{papers2://publication/uuid/8D70C4C8-940B-43B3-9609-1B5534D4EF2C}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PP47500017},
    Volume = {6},
    Year = {1994},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PP47500017}}
  • P. O’Sullivan and K. Breuer, “Transient growth in circular pipe flow. 1. Linear disturbances,” Phys. Fluids., vol. 6, iss. 11, pp. 3643-3651, 1994.
    [Bibtex]
    @article{OSullivan1994:1,
    Author = {O'Sullivan, P and Breuer, K},
    Date-Added = {2010-06-18T13:14:04GMT+00:00},
    Date-Modified = {2012-03-30 01:57:36 +0000},
    Journal = pf,
    Month = nov,
    Number = {11},
    Pages = {3643-3651},
    Rating = {0},
    Title = {{Transient growth in circular pipe flow. 1. Linear disturbances}},
    Uri = {\url{papers2://publication/uuid/D27D28B6-6927-46EE-84AB-ED87C72322D9}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PP47500016},
    Volume = {6},
    Year = {1994},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PP47500016}}
  • D. Henningson, L. Gustavsson, and K. Breuer, “Localized disturbances in parallel shear flows,” Applied Scientific Research, vol. 53, iss. 1-2, pp. 51-97, 1994.
    [Bibtex]
    @article{Henningson1994,
    Author = {Henningson, D and Gustavsson, L and Breuer, K},
    Date-Added = {2010-06-18T13:13:51GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {Applied Scientific Research},
    Month = sep,
    Number = {1-2},
    Pages = {51-97},
    Rating = {0},
    Title = {{Localized disturbances in parallel shear flows}},
    Uri = {\url{papers2://publication/uuid/9AACA1AC-4204-4A7A-8525-F69038B3FA58}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PR60800004},
    Volume = {53},
    Year = {1994},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994PR60800004}}
  • K. Breuer and T. Kuraishi, “Transient growth in two-dimensional and three-dimensional boundary layers,” Phys. Fluids., vol. 6, iss. 6, pp. 1983-1993, 1994.
    [Bibtex]
    @article{Breuer1994,
    Author = {Breuer, K and Kuraishi, T},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = pf,
    Month = jun,
    Number = {6},
    Pages = {1983-1993},
    Rating = {0},
    Title = {{Transient growth in two-dimensional and three-dimensional boundary layers}},
    Uri = {\url{papers2://publication/uuid/81F66F9C-3263-41A8-9181-59150427728E}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994NQ06900008},
    Volume = {6},
    Year = {1994},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1994NQ06900008}}

1992

  • K. Breuer and R. Everson, “On the errors incurred calculating derivatives using Chebyshev Polynomials,” J. Comp. Phys., vol. 99, iss. 1, pp. 56-67, 1992.
    [Bibtex]
    @article{Breuer1992,
    Author = {Breuer, K and Everson, R},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = jcp,
    Month = mar,
    Number = {1},
    Pages = {56-67},
    Rating = {0},
    Title = {{On the errors incurred calculating derivatives using Chebyshev Polynomials}},
    Uri = {\url{papers2://publication/uuid/42587BAA-C32B-49CE-84B5-D84C74B89F5F}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1992HK01400005},
    Volume = {99},
    Year = {1992},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1992HK01400005}}

1991

  • K. Breuer and L. Sirovich, “The use of the Karhunen-Loeve procedure for the calculation of linear eigenfunctions,” J. Comp. Phys., vol. 96, iss. 2, pp. 277-296, 1991.
    [Bibtex]
    @article{Breuer1991,
    Author = {Breuer, K and Sirovich, L},
    Date-Added = {2010-06-18T13:13:46GMT+00:00},
    Date-Modified = {2013-10-28 00:51:08 +0000},
    Journal = jcp,
    Month = oct,
    Number = {2},
    Pages = {277-296},
    Rating = {0},
    Title = {{The use of the Karhunen-Loeve procedure for the calculation of linear eigenfunctions}},
    Uri = {\url{papers2://publication/uuid/9A52C761-2235-48AD-8B02-65BD6AFAB2FF}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1991GH41300003},
    Volume = {96},
    Year = {1991},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1991GH41300003}}
  • J. Cohen, K. Breuer, and J. Haritonidis, “On the evolution of a wave packet in a laminar boundary layer,” J. Fluid. Mech., vol. 225, pp. 575-606, 1991.
    [Bibtex]
    @article{Cohen1991,
    Author = {Cohen, J and Breuer, K and Haritonidis, J},
    Date-Added = {2010-06-18T13:13:46GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = jfm,
    Month = apr,
    Pages = {575-606},
    Rating = {0},
    Title = {{On the evolution of a wave packet in a laminar boundary layer}},
    Uri = {\url{papers2://publication/uuid/A9918E16-4B6A-4CA2-809D-A17BA11DDDEC}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1991FK16100024},
    Volume = {225},
    Year = {1991},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1991FK16100024}}

1990

  • K. Breuer and M. Landahl, “The evolution of a localized disturbance in a laminar boundary layer. 2 Strong disturbances,” J. Fluid. Mech., vol. 220, pp. 595-621, 1990.
    [Bibtex]
    @article{Breuer1990:2,
    Author = {Breuer, K and Landahl, M},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:57:55 +0000},
    Journal = jfm,
    Month = nov,
    Pages = {595-621},
    Rating = {0},
    Title = {{The evolution of a localized disturbance in a laminar boundary layer. 2 Strong disturbances}},
    Uri = {\url{papers2://publication/uuid/3F6DBAD3-AA1B-4246-9D75-50630CD17916}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1990EK87500023},
    Volume = {220},
    Year = {1990},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1990EK87500023}}
  • K. Breuer and J. Haritonidis, “The evolution of a localized disturbance in a laminar boundary layer. 1 Weak disturbances,” J. Fluid. Mech., vol. 220, pp. 569-594, 1990.
    [Bibtex]
    @article{Breuer1990:1,
    Author = {Breuer, K and Haritonidis, J},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:57:48 +0000},
    Journal = jfm,
    Month = nov,
    Pages = {569-594},
    Rating = {0},
    Title = {{The evolution of a localized disturbance in a laminar boundary layer. 1 Weak disturbances}},
    Uri = {\url{papers2://publication/uuid/C392D53F-B1C8-498D-A150-303108F58E4B}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1990EK87500022},
    Volume = {220},
    Year = {1990},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1990EK87500022}}

1989

  • K. Breuer, J. Haritonidis, and M. Landahl, “The control of transient disturbances in a flat-plate boundary layer through active wall motion,” pf A-Fluid Dynamics, vol. 1, iss. 3, pp. 574-582, 1989.
    [Bibtex]
    @article{Breuer1989,
    Author = {Breuer, K and Haritonidis, J and Landahl, M},
    Date-Added = {2010-06-18T13:13:33GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = {pf A-Fluid Dynamics},
    Month = mar,
    Number = {3},
    Pages = {574-582},
    Rating = {0},
    Title = {{The control of transient disturbances in a flat-plate boundary layer through active wall motion}},
    Uri = {\url{papers2://publication/uuid/F23E7AB9-572A-46BC-AC02-2E86207ACBD8}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1989T477700018},
    Volume = {1},
    Year = {1989},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1989T477700018}}

1988

  • R. Lueptow, K. Breuer, and J. Haritonidis, “Computer-aided calibration of x-probes using a look-up table,” Expt. Fluids, vol. 6, iss. 2, pp. 115-118, 1988.
    [Bibtex]
    @article{Lueptow1988,
    Author = {Lueptow, R and Breuer, K and Haritonidis, J},
    Date-Added = {2010-06-18T13:13:58GMT+00:00},
    Date-Modified = {2012-03-30 01:53:59 +0000},
    Journal = expfl,
    Number = {2},
    Pages = {115-118},
    Rating = {0},
    Title = {{Computer-aided calibration of x-probes using a look-up table}},
    Uri = {\url{papers2://publication/uuid/4CDCA687-7554-4443-A9FE-B4048AD9D106}},
    Url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1988L285100007},
    Volume = {6},
    Year = {1988},
    Bdsk-Url-1 = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=A1988L285100007}}