Diffusion of chiral Janus particles in a sinusoidal channel

We investigated the transport diffusivity of artificial microswimmers, a.k.a. Janus particles, in the absence of external biases. We considered the case of chiral Janus particles moving either in the bulk or in sinusoidal channels with reflecting walls. Their self-diffusion constants turned out to depend on both the strength and the chirality of the self-propulsion mechanism. More importantly, in a periodic channel self-diffusion can be controlled by tailoring the compartment geometry. Copyright (C) EPLA, 2015