Issue 5, 2017

Phase behavior of active Brownian disks, spheres, and dimers

Abstract

In this paper we provide high precision estimates of the phase diagram of active Brownian particles. We extract coexisting densities from simulations of phase separated states in an elongated box (slab geometry) which minimizes finite-size effects and allows for precise determination of points on the binodal lines. Using this method, we study the influence of both shape and dimensionality on the two-phase region. Active spheres and dimers of active particles are compared to the known phase diagram of active Brownian disks. In the case of dimers, both correlated and uncorrelated propulsion of the two beads are studied. The influence of correlations is discussed through a simple mapping.

Graphical abstract: Phase behavior of active Brownian disks, spheres, and dimers

Article information

Article type
Paper
Submitted
21 Nov 2016
Accepted
02 Jan 2017
First published
13 Jan 2017

Soft Matter, 2017,13, 1020-1026

Phase behavior of active Brownian disks, spheres, and dimers

J. T. Siebert, J. Letz, T. Speck and P. Virnau, Soft Matter, 2017, 13, 1020 DOI: 10.1039/C6SM02622B

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