Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Generalized thermodynamics of motility-induced phase separation : Phase equilibria, Laplace pressure, and change of ensembles

Solon, Alexandre P. ; Stenhammar, Joakim LU ; Cates, Michael E. ; Kafri, Yariv and Tailleur, Julien (2018) In New Journal of Physics 20(7).
Abstract

Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that controls finite-size corrections to coexisting densities, and generalized forces, that can be used to construct new thermodynamic ensembles. Our framework is based on a non-equilibrium generalization of the Cahn-Hilliard equation and we discuss its application to active particles interacting either via quorum-sensing interactions or directly through pairwise forces.

Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
active matter, motility-induced phase separation, non-equilibrium statistical mechanics
in
New Journal of Physics
volume
20
issue
7
article number
075001
publisher
IOP Publishing
external identifiers
  • scopus:85051678602
ISSN
1367-2630
DOI
10.1088/1367-2630/aaccdd
language
English
LU publication?
yes
id
451888c0-9eeb-4f99-88b6-cd16a60fe867
date added to LUP
2018-09-11 14:29:07
date last changed
2022-04-25 17:05:58
@article{451888c0-9eeb-4f99-88b6-cd16a60fe867,
  abstract     = {{<p>Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that controls finite-size corrections to coexisting densities, and generalized forces, that can be used to construct new thermodynamic ensembles. Our framework is based on a non-equilibrium generalization of the Cahn-Hilliard equation and we discuss its application to active particles interacting either via quorum-sensing interactions or directly through pairwise forces.</p>}},
  author       = {{Solon, Alexandre P. and Stenhammar, Joakim and Cates, Michael E. and Kafri, Yariv and Tailleur, Julien}},
  issn         = {{1367-2630}},
  keywords     = {{active matter; motility-induced phase separation; non-equilibrium statistical mechanics}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{7}},
  publisher    = {{IOP Publishing}},
  series       = {{New Journal of Physics}},
  title        = {{Generalized thermodynamics of motility-induced phase separation : Phase equilibria, Laplace pressure, and change of ensembles}},
  url          = {{http://dx.doi.org/10.1088/1367-2630/aaccdd}},
  doi          = {{10.1088/1367-2630/aaccdd}},
  volume       = {{20}},
  year         = {{2018}},
}