Influence of Light Induced Molecular Conformational Transformations and Anchoring Energy on Cholesteric Liquid Crystal Pitch and Dielectric Properties
作者:
IgorP. Pinkevich,
VictorYu. Reshetnyak,
YurijA. Rezikov,
LeohidG. Grechko,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1992)
卷期:
Volume 222,
issue 1
页码: 269-278
ISSN:1058-725X
年代: 1992
DOI:10.1080/15421409208048701
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The cholesteric liquid crystal (CLC) pitch and director orientation are obtained as the functions of the anchoring energy W of a director and its pretilt angles Δϑ1, Δϑ2on the cell orienting surfaces. If the anchoring energy is strong enough, the monotonic change of the CLC twisting ability due, for example, to the light-induced molecular conformational transformatins causes jumps of the CLC pitch and mean values of dielectric susceptibility tensor ⟨ϵ1J⟩. Values of Jumps of ⟨ϵ1J⟩ components are determined by anchoring energy W and pretilt angles Δϑ1, Δϑ2that may be used for experimental estimations of W, Δϑ1, Δϑ2.
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