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Propagating director bend fluctuations in nematic liquid crystals
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Allen, M. P. and Humpert, Anja (2015) Propagating director bend fluctuations in nematic liquid crystals. Physical Review Letters, 114 (2). 028301. doi:10.1103/PhysRevLett.114.028301 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.114.028301
Abstract
We show, by molecular simulation, that for a range of standard, coarse-grained, nematic liquid crystal models, the director bend fluctuation is a propagating mode. This is in contrast to the generally-accepted picture of nematic hydrodynamics, in which all the director modes (splay, twist, bend, and combinations thereof) are overdamped. By considering the various physical parameters that enter the equations of nematodynamics, we propose an explanation of this effect, and conclude that propagating bend fluctuations may be observable in some experimental systems.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QA Mathematics Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Library of Congress Subject Headings (LCSH): | Liquid crystals | ||||||||
Journal or Publication Title: | Physical Review Letters | ||||||||
Publisher: | American Physical Society | ||||||||
ISSN: | 0031-9007 | ||||||||
Official Date: | 14 January 2015 | ||||||||
Dates: |
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Volume: | 114 | ||||||||
Number: | 2 | ||||||||
Number of Pages: | 12 | ||||||||
Article Number: | 028301 | ||||||||
DOI: | 10.1103/PhysRevLett.114.028301 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 28 December 2015 | ||||||||
Date of first compliant Open Access: | 28 December 2015 | ||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
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