Phys. Rev. Lett. 103, 068102 (2009) [4 pages]Steering Chiral Swimmers along Noisy Helical PathsReceived 3 March 2009; published 6 August 2009 Chemotaxis along helical paths towards a target releasing a chemoattractant is found in sperm cells and many microorganisms. We discuss the stochastic differential geometry of the noisy helical swimming path of a chiral swimmer. A chiral swimmer equipped with a simple feedback system can navigate in a concentration gradient of chemoattractant. We derive an effective equation for the alignment of helical paths with a concentration gradient which is related to the alignment of a dipole in an external field and discuss the chemotaxis index. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.068102
DOI:
10.1103/PhysRevLett.103.068102
PACS:
87.17.Jj, 02.50.Fz, 87.18.Tt
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