The University of Southampton
University of Southampton Institutional Repository

Waves at the nematic-isotropic interface

Waves at the nematic-isotropic interface
Waves at the nematic-isotropic interface
We examine surface modes at the nematic-isotropic interface in polymer-liquid-crystal mixtures using the dynamical Landau-de Gennes model for the orientational (non-conserved) order parameter coupled with Cahn-Hilliard equation for concentration (conserved order parameter) and with hydrodynamic degrees of freedom. The generalized dispersion relation is obtained and analyzed in particular cases. Orientational order parameter relaxation dominates in the short wavelength limit, while in the long wavelength limit viscous damping becomes important. The effect of polymer is to increase the surface tension and as a consequence the relaxation rate in the hydrodynamic limit. Finally, we discuss how to measure experimentally the dispersion relation.
1542-1406
875-892
Popa-Nita, V.
068ec8ef-991a-40da-bbe5-3b2575be71d1
Oswald, P.
0b79dc13-976c-470b-a6d2-03336f69a79c
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6
Popa-Nita, V.
068ec8ef-991a-40da-bbe5-3b2575be71d1
Oswald, P.
0b79dc13-976c-470b-a6d2-03336f69a79c
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6

Popa-Nita, V., Oswald, P. and Sluckin, T.J. (2005) Waves at the nematic-isotropic interface. Molecular Crystals and Liquid Crystals, 435, 875-892. (doi:10.1080/15421400590955299).

Record type: Article

Abstract

We examine surface modes at the nematic-isotropic interface in polymer-liquid-crystal mixtures using the dynamical Landau-de Gennes model for the orientational (non-conserved) order parameter coupled with Cahn-Hilliard equation for concentration (conserved order parameter) and with hydrodynamic degrees of freedom. The generalized dispersion relation is obtained and analyzed in particular cases. Orientational order parameter relaxation dominates in the short wavelength limit, while in the long wavelength limit viscous damping becomes important. The effect of polymer is to increase the surface tension and as a consequence the relaxation rate in the hydrodynamic limit. Finally, we discuss how to measure experimentally the dispersion relation.

This record has no associated files available for download.

More information

Published date: 2005

Identifiers

Local EPrints ID: 29605
URI: http://eprints.soton.ac.uk/id/eprint/29605
ISSN: 1542-1406
PURE UUID: 816fd751-f34c-4871-95b1-e82cf4cdb48f
ORCID for T.J. Sluckin: ORCID iD orcid.org/0000-0002-9163-0061

Catalogue record

Date deposited: 12 May 2006
Last modified: 09 Jan 2022 02:32

Export record

Altmetrics

Contributors

Author: V. Popa-Nita
Author: P. Oswald
Author: T.J. Sluckin ORCID iD

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

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×