Archive ouverte HAL – Electrophoresis of active Janus particles

Parvin Bayati 1 Ali Najafi

Parvin Bayati, Ali Najafi. Electrophoresis of active Janus particles. Journal of Chemical Physics, American Institute of Physics, 2019, 150 (23), pp.234902. ⟨10.1063/1.5101023⟩. ⟨hal-02291804⟩

We theoretically consider the dynamics of a self-propelled active Janus motor moving in an external electric field. The external field can manipulate the route of a Janus particle and enforce it to move towards the desired targets. To investigate the trajectory of this active motor, we use a perturbative scheme. At the leading orders of surface activity of the Janus particle and also the external field, the orientational dynamics of the Janus particles behave like a mathematical pendulum with an angular the velocity that is sensitive to both the electric field and surface activity of the motor.

  • 1. LPTMS - Laboratoire de Physique Théorique et Modèles Statistiques