Macro and Micro Phase Separation in Mixtures of Active and Passive Particles

Active spinning particles have been shown to phase separate when mixed with inactive particles. Here we present our work on controlling such phase separation to obtain microphase separation apart from the typical macrophase separation as a function of the reversal of the torque on the particles. Using this technique we can achieve control over the domain size as a function of the activity. We further show that the systems displays hysteresis as one changes the driving force. These results extend our knowledge of phase separation in mixtures of active and passive particles.