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Surface screening layers and dynamics of energy transfer in photosensitive polymer-liquid crystal structures

Surface screening layers and dynamics of energy transfer in photosensitive polymer-liquid crystal structures
Surface screening layers and dynamics of energy transfer in photosensitive polymer-liquid crystal structures
The dynamics of energy transfer in photoconductive polymer liquid crystal structures can contain important information on interface effects and surface electric fields contributing to the strength of liquid crystal reorientation gratings. The characteristic, transient effects observed during switching on and off of incident light or electric field can be explained by the presence of surface screening layers. Screening layers play an important role in the reorientation of liquid crystal director in cells with different alignment layers. Strong screening of external DC field is present not only in cells with a photoconductive polymer (56 V), but in standard cells with thicker (0.3 ?m) polyimide, aligning layers.
nematic liquid crystals, photoconductive polymers, surface-charge field, two-beam coupling
1542-1406
261-272
Dyadyusha, Andriy
daa939a8-2860-4a31-ab12-7950bf59aeef
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Gilchrist, Graham
3b427fc1-57c3-44a1-b3b0-4c5498b26b04
Dyadyusha, Andriy
daa939a8-2860-4a31-ab12-7950bf59aeef
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Gilchrist, Graham
3b427fc1-57c3-44a1-b3b0-4c5498b26b04

Dyadyusha, Andriy, Kaczmarek, Malgosia and Gilchrist, Graham (2006) Surface screening layers and dynamics of energy transfer in photosensitive polymer-liquid crystal structures. Molecular Crystals and Liquid Crystals, 446, 261-272. (doi:10.1080/15421400500379731).

Record type: Article

Abstract

The dynamics of energy transfer in photoconductive polymer liquid crystal structures can contain important information on interface effects and surface electric fields contributing to the strength of liquid crystal reorientation gratings. The characteristic, transient effects observed during switching on and off of incident light or electric field can be explained by the presence of surface screening layers. Screening layers play an important role in the reorientation of liquid crystal director in cells with different alignment layers. Strong screening of external DC field is present not only in cells with a photoconductive polymer (56 V), but in standard cells with thicker (0.3 ?m) polyimide, aligning layers.

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More information

Published date: April 2006
Keywords: nematic liquid crystals, photoconductive polymers, surface-charge field, two-beam coupling

Identifiers

Local EPrints ID: 57180
URI: https://eprints.soton.ac.uk/id/eprint/57180
ISSN: 1542-1406
PURE UUID: 96b030e7-414f-405b-8898-dd9c1bf6361d

Catalogue record

Date deposited: 13 Aug 2008
Last modified: 13 Mar 2019 20:34

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Contributors

Author: Andriy Dyadyusha
Author: Graham Gilchrist

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