Hydrodynamic suppression of phase separation in active suspensions

Matas-Navarro, Ricard; Golestanian, Ramin; Liverpool, Tanniemola B.; Fielding, Suzanne M.

doi:10.1103/physreve.90.032304

Hydrodynamic suppression of phase separation in active suspensions

Matas-Navarro, Ricard; Golestanian, Ramin; Liverpool, Tanniemola B.; Fielding, Suzanne M.

Authors

Ricard Matas-Navarro

Ramin Golestanian

Tanniemola B. Liverpool

Professor Suzanne Fielding suzanne.fielding@durham.ac.uk
Professor

Abstract

We simulate with hydrodynamics a suspension of active disks squirming through a Newtonian fluid. We explore numerically the full range of squirmer area fractions from dilute to close packed and show that “motility induced phase separation,” which was recently proposed to arise generically in active matter, and which has been seen in simulations of active Brownian disks, is strongly suppressed by hydrodynamic interactions. We give an argument for why this should be the case and support it with counterpart simulations of active Brownian disks in a parameter regime that provides a closer counterpart to hydrodynamic suspensions than in previous studies.

Citation

Matas-Navarro, R., Golestanian, R., Liverpool, T. B., & Fielding, S. M. (2014). Hydrodynamic suppression of phase separation in active suspensions. Physical review E: Statistical, nonlinear, and soft matter physics, 90(3), Article 032304. https://doi.org/10.1103/physreve.90.032304

Journal Article Type	Article
Acceptance Date	Aug 8, 2014
Online Publication Date	Sep 18, 2014
Publication Date	Sep 18, 2014
Deposit Date	Apr 29, 2015
Publicly Available Date	May 1, 2015
Journal	Physical review . E, Statistical, nonlinear, and soft matter physics
Print ISSN	1539-3755
Electronic ISSN	1550-2376
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	90
Issue	3
Article Number	032304
DOI	https://doi.org/10.1103/physreve.90.032304

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