Active Brownian particles at interfaces: An effective equilibrium approach

Abstract

A simple theoretical approach is used to investigate active colloids at the free interface and near repulsive substrates. We employ dynamical density functional theory to determine the steady-state density profiles in an effective equilibrium system [Farage et al., Phys. Rev. E, 91 (2015) 042310]. In addition to the known accumulation at surfaces, we predict wetting and drying transitions at a flat repulsive wall and capillary condensation and evaporation in a slit pore. These new phenomena are closely related to the motility-induced phase separation (MIPS) in the bulk.

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• The Parental Active Model: a unifying stochastic description of self-propulsion
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• Dynamics of active particles with translational and rotational inertia
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• Tuning Nonequilibrium Phase Transitions with Inertia
• Capillary action in scalar active matter
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• Isotropic-nematic transition of self-propelled rods in three dimensions
• Static Structure of Active Brownian Hard Disks
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• Derivation and analysis of a phase field crystal model for a mixture of active and passive particles
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• How to distinguish between indistinguishable particles
• Correlated escape of active particles across a potential barrier
• Escape rate of an active Brownian particle in a rough potential
• What is active wetting?
• Controlling Vortex Rotation in Dry Active Matter