Diffusion of active particles with angular velocity reversal

Biological and synthetic microswimmers display a wide range of swimming trajectories depending on driving forces and torques. In this paper we consider a simple overdamped model of self-propelled particles with a constant self-propulsion speed but an angular velocity that varies in time. Specifically, we consider the case of both deterministic and stochastic angular velocity reversals, mimicking several synthetic active matter systems, such as propelled droplets. The orientational correlation function and effective diffusivity is studied using Langevin dynamics simulations and perturbative methods.

Automated summary

This paper investigates the motion characteristics of self-propelled particles with variable angular velocity over time, mimicking the behavior of synthetic active matter systems. The orientational correlation function and effective diffusivity are analyzed using Langevin dynamics simulations and perturbative methods.