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Field-induced alignment of the directors in the smectic A phase. Experiment and simulation

Field-induced alignment of the directors in the smectic A phase. Experiment and simulation
Field-induced alignment of the directors in the smectic A phase. Experiment and simulation
In contrast to nematics far less is known about the alignment of the directors in a smectic A phase by an external field. To characterise this process, which necessarily involves the flow of the molecules, we have undertaken an NMR investigation of the smectic A phase of 4-octyl-4'-cyanobiphenyl. The results of these experiments have revealed that, as expected, the alignment of the directors is a complex process strongly influenced by the nature of the containing surface for the smectic A phase. To assist in understanding the alignment process we have used computer simulations to study the field induced alignment of the directors in the smectic A phase formed by the Gay-Berne mesogen GB(4.4,20.0,1.1).
smectic a, director alignment, nmr, computer simulation
1542-1406
365-379
Luckhurst, G. R.
923cc3f5-cc34-4c4c-8508-1fe3b83aac16
Luckhurst, G. R.
923cc3f5-cc34-4c4c-8508-1fe3b83aac16

Luckhurst, G. R. (2000) Field-induced alignment of the directors in the smectic A phase. Experiment and simulation. Molecular Crystals and Liquid Crystals, 347, 365-379.

Record type: Article

Abstract

In contrast to nematics far less is known about the alignment of the directors in a smectic A phase by an external field. To characterise this process, which necessarily involves the flow of the molecules, we have undertaken an NMR investigation of the smectic A phase of 4-octyl-4'-cyanobiphenyl. The results of these experiments have revealed that, as expected, the alignment of the directors is a complex process strongly influenced by the nature of the containing surface for the smectic A phase. To assist in understanding the alignment process we have used computer simulations to study the field induced alignment of the directors in the smectic A phase formed by the Gay-Berne mesogen GB(4.4,20.0,1.1).

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More information

Published date: 2000
Keywords: smectic a, director alignment, nmr, computer simulation

Identifiers

Local EPrints ID: 19021
URI: http://eprints.soton.ac.uk/id/eprint/19021
ISSN: 1542-1406
PURE UUID: 57db257e-44ba-4384-a20b-fd436f337666

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Date deposited: 18 Jan 2006
Last modified: 08 Jan 2022 09:50

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Contributors

Author: G. R. Luckhurst

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