Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.108102
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Funding
- National Institutes of Health (NIH) [1R01HD070038]
- National Science Foundation (NSF) [CBET-1066193]
- USDA National Institute of Food and Agriculture, Hatch project and performed in part at the Cornell Nanobiotechnology Center (NBTC)
- Cornell NanoScale Science and Technology Facility (CNF, NSF) [ECCS-0335765]
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT [R01HD070038] Funding Source: NIH RePORTER
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We demonstrate that upstream swimming of sperm emerges via an orientation disorder-order transition. The order parameter, the average orientation of the sperm head against the flow, follows a 0.5 power law with the deviation from the critical flow shear rate (gamma - gamma(c)). This transition is successfully explained by a hydrodynamic bifurcation theory, which extends the sperm upstream swimming to a broad class of near surface microswimmers that possess front-back asymmetry and circular motion.
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