Kinetics of the Nematic-Isotropic Interface
Kinetics of the Nematic-Isotropic Interface
We investigate the motion of an interface between a nematic liquid crystal phase and the isotropic phase of the same fluid. In this simplified model we assume the nematic liquid crystal to have one order parameter only and also suppose the system to be isothermal and initially quenched into the metastable régime of the isotropic phase (Tni>T>T*) . What results is the time-dependent Ginzburg-Landau equation, with domain wall solutions, corresponding to phase interfaces, which interpolate between static isotropic and nematic minima. These domain walls move with a unique velocity which depends more or less linearly on the degree of undercooling. For real liquid crystals this velocity is of the order of cm s -1. We also examine the relaxation mode solutions of the Ginzburg-Landau equation, and present a complete phase-diagram of these solutions.
873-884
Popa-Nita, V.
068ec8ef-991a-40da-bbe5-3b2575be71d1
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6
1996
Popa-Nita, V.
068ec8ef-991a-40da-bbe5-3b2575be71d1
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6
Popa-Nita, V. and Sluckin, T.J.
(1996)
Kinetics of the Nematic-Isotropic Interface.
Journal de Physique II, 6, .
(doi:10.1051/jp2:1996216).
Abstract
We investigate the motion of an interface between a nematic liquid crystal phase and the isotropic phase of the same fluid. In this simplified model we assume the nematic liquid crystal to have one order parameter only and also suppose the system to be isothermal and initially quenched into the metastable régime of the isotropic phase (Tni>T>T*) . What results is the time-dependent Ginzburg-Landau equation, with domain wall solutions, corresponding to phase interfaces, which interpolate between static isotropic and nematic minima. These domain walls move with a unique velocity which depends more or less linearly on the degree of undercooling. For real liquid crystals this velocity is of the order of cm s -1. We also examine the relaxation mode solutions of the Ginzburg-Landau equation, and present a complete phase-diagram of these solutions.
This record has no associated files available for download.
More information
Published date: 1996
Identifiers
Local EPrints ID: 29560
URI: http://eprints.soton.ac.uk/id/eprint/29560
ISSN: 1155-4312
PURE UUID: 830e6cfb-5174-4490-94df-bc84122d7659
Catalogue record
Date deposited: 09 Jan 2007
Last modified: 16 Mar 2024 02:32
Export record
Altmetrics
Contributors
Author:
V. Popa-Nita
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
