Active Brownian particles at interfaces: An effective equilibrium approach
Soft Condensed Matter
2017-02-03 v1
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.
Cite
@article{arxiv.1702.00656,
title = {Active Brownian particles at interfaces: An effective equilibrium approach},
author = {René Wittmann and Joseph M. Brader},
journal= {arXiv preprint arXiv:1702.00656},
year = {2017}
}