Journal article

Intrinsic free energy in active nematics

Abstract:: Basing our arguments on the theory of active liquid crystals, we demonstrate, both analytically and numerically, that the activity can induce an effective free energy which enhances ordering in extensile systems of active rods and in contractile suspensions of active discs. We argue that this occurs because any ordering fluctuation is enhanced by the flow field it produces. A phase diagram in the temperature-activity plane compares ordering due to a thermodynamic free energy to that resulting from the activity. We also demonstrate that activity can drive variations in concentration, but for a different physical reason that relies on the separation of hydrodynamic and diffusive time scales.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Thampi, S., Doostmohammadi, A., Golestanian, R., & Yeomans, J. (2015). Intrinsic free energy in active nematics. EPL, 112(2), 28004–28004.

MLA Style

Thampi, S., et al. “Intrinsic Free Energy in Active Nematics.” EPL, vol. 112, no. 2, IOP Publishing, 2015, pp. 28004–04.

Chicago Style

Thampi, S, A Doostmohammadi, R Golestanian, and J Yeomans. 2015. “Intrinsic Free Energy in Active Nematics.” EPL 112 (2): 28004–.
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Publisher copy:: 10.1209/0295-5075/112/28004

Authors

+ Thampi, S More by this author

Role:: Author

+ Doostmohammadi, A More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ Golestanian, R More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ Yeomans, J More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ European Research Council More from this funder

Grant:: MiCE

Publisher:: IOP Publishing
Journal:: EPL More from this journal
Volume:: 112
Issue:: 2
Pages:: 28004-28004
Publication date:: 2015-10-01
DOI:: 10.1209/0295-5075/112/28004
EISSN:: 1286-4854
ISSN:: 0295-5075

Pubs id:: pubs:580262
UUID:: uuid:3973f71b-512a-4d96-9627-649d889cb8e9
Local pid:: pubs:580262
Source identifiers:: 580262
Deposit date:: 2015-12-21

Terms of use

Copyright holder:: EPLA
Copyright date:: 2015
Notes:: Copyright © EPLA, 2015.

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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