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arXiv · 0709.0792

Brownian dynamics of a microswimmer

Vladimir Lobaskin·Dmitry Lobaskin·Igor M. Kulic
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Abstract

We report on dynamic properties of a simple model microswimmer composed of three spheres and propelling itself in a viscous fluid by spinning motion of the spheres under zero net torque constraint. At a fixed temperature and increasing the spinning frequency, the swimmer demonstrates a transition from dissipation-dominated to a pumping-dominated motion regime characterized by negative effective friction coefficient. In the limit of high frequencies, the diffusion of the swimmer can be described by a model of an active particle with constant velocity.

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Vladimir Lobaskin, Dmitry Lobaskin, Igor M. Kulic. 2007-09-06. Brownian dynamics of a microswimmer. https://doi.org/10.1140/epjst%2Fe2008-00637-7

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