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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Lobaskin, V., Lobaskin, D. & Kulić, I. Brownian dynamics of a microswimmer. Eur. Phys. J. Spec. Top. 157, 149–156 (2008). https://doi.org/10.1140/epjst/e2008-00637-7
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DOI: https://doi.org/10.1140/epjst/e2008-00637-7