Speaker
Description
Janus particles can be externally controlled in many different ways. The swim velocity of an active particle can be increased or decreased by tuning the light’s power illumination, resulting in different self-assembly paths. This provides interesting applications, such as micro-motors where light–induced asymmetric velocity profiles give rise to directed motion.
While much is known about controlling Janus particles through static spatial motility landscapes, it still lacks a theoretical background. Moreover, the impact of spatio–temporal external fields as a way of controlling new assembly pathways remains unexplored.
In this work we provide theoretical framework for static motility patterns to more precisely characterize different assembly pathways in the dilute regime. Furthermore, we investigate the dynamical behaviour of active particles in response to an activity landscape, aiming to better understand the effects of spatio-temporal modulation of the self-propulsion velocity.
