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  Intrinsic free energy in active nematics

Thampi, S. P., Doostmohammadi, A., Golestanian, R., & Yeomans, J. M. (2015). Intrinsic free energy in active nematics. EPL, 112(2): 28004. doi:10.1209/0295-5075/112/28004.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-7621-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-7622-4
Genre: Journal Article

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Thampi, S. P., Author
Doostmohammadi, A., Author
Golestanian, Ramin1, Author              
Yeomans, J. M., Author
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1Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2570692              

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 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. Copyright © EPLA, 2015.

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Language(s): eng - English
 Dates: 2015-11-092015
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1209/0295-5075/112/28004
BibTex Citekey: Thampi2015
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Title: EPL
Source Genre: Journal
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Pages: 6 Volume / Issue: 112 (2) Sequence Number: 28004 Start / End Page: - Identifier: -