Ellipsoidal Brownian self-driven particles in a magnetic field.

Fan, Wai-Tong Louis; Pak, On Shun; Sandoval, Mario · Phys Rev E · 2017

basic_science · Level V

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Abstract

We study the two-dimensional Brownian dynamics of an ellipsoidal paramagnetic microswimmer moving at a low Reynolds number and subject to a magnetic field. Its corresponding mean-square displacement, showing the effect of a particles's shape, activity, and magnetic field on the microswimmer's diffusion, is analytically obtained. Comparison between analytical and computational results shows good agreement. In addition, the effect of self-propulsion on the transition time from anisotropic to isotropic diffusion of the ellipse is investigated.