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arXiv · 0803.2008

Dynamics of a Brownian circle swimmer

Sven van Teeffelen·Hartmut Löwen
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Abstract

Self-propelled particles move along circles rather than along a straight line when their driving force does not coincide with their propagation direction. Examples include confined bacteria and spermatozoa, catalytically driven nanorods, active, anisotropic colloidal particles and vibrated granulates. Using a non-Hamiltonian rate theory and computer simulations, we study the motion of a Brownian "circle swimmer" in a confining channel. A sliding mode close to the wall leads to a huge acceleration as compared to the bulk motion, which can further be enhanced by an optimal effective torque-to-force ratio.

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Sven van Teeffelen, Hartmut Löwen. 2008-08-16. Dynamics of a Brownian circle swimmer. https://doi.org/10.1103/physreve.78.020101

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