Rotational motion of dimers of Janus particles

Abstract

We theoretically study the motion of a rigid dimer of self-propelling Janus particles. In a simple kinetic approach without hydrodynamic interactions, the dimer moves on a helical trajectory and, at the same time, it rotates about its center of mass. Inclusion of the effects of mutual advection using superposition approximation does not alter the qualitative features of the motion but merely changes the parameters of the trajectory and the angular velocity.

6 pages, 2 figures

References in corpus (4)

• Self-motile colloidal particles: from directed propulsion to random walk
• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Propulsion of a molecular machine by asymmetric distribution of reaction--products
• Diffusive transport without detailed balance in motile bacteria: Does microbiology need statistical physics?