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Immersed boundary simulations of active fluid droplets

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Whitfield, Carl A. and Hawkins, Rhoda J. (2016) Immersed boundary simulations of active fluid droplets. PLoS One, 11 (9). e0162474. doi:10.1371/journal.pone.0162474

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Official URL: http://dx.doi.org/10.1371/journal.pone.0162474

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Abstract

We present numerical simulations of active fluid droplets immersed in an external fluid in 2-dimensions using an Immersed Boundary method to simulate the fluid droplet interface as a Lagrangian mesh. We present results from two example systems, firstly an active isotropic fluid boundary consisting of particles that can bind and unbind from the interface and generate surface tension gradients through active contractility. Secondly, a droplet filled with an active polar fluid with homeotropic anchoring at the droplet interface. These two systems demonstrate spontaneous symmetry breaking and steady state dynamics resembling cell motility and division and show complex feedback mechanisms with minimal degrees of freedom. The simulations outlined here will be useful for quantifying the wide range of dynamics observable in these active systems and modelling the effects of confinement in a consistent and adaptable way.

Item Type: Journal Article
Subjects: Q Science > QH Natural history
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Cells -- Motility -- Simulation -- Mathematical models, Cell division -- Simulation -- Mathematical models
Journal or Publication Title: PLoS One
Publisher: Public Library of Science
ISSN: 1932-6203
Official Date: 8 September 2016
Dates:
DateEvent
8 September 2016Published
23 August 2016Accepted
24 May 2016Submitted
Volume: 11
Number: 9
Article Number: e0162474
DOI: 10.1371/journal.pone.0162474
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP/K503149/1
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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