Pretilt angle measurements on smectic A cells with chevron and tilted bookshelf layer structures
作者:
J.J. Bonvent,
J.A. M. M. Van Haaren,
G. Cnossen,
A.G. H. Verhulst,
P. Van Der Sluis,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 18,
issue 5
页码: 723-731
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508036682
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We have measured the pretilt angle induced by rubbed polymer films in a smectic A and in a nematic liquid crystalline medium using an optical phase retardation method. The pretilt angle was found to depend on the liquid crystalline phase (smectic A versus nematic) and on the smectic layer structure (chevron versus tilted-bookshelf). The occurrence of the different smectic layer structures was verified by X-ray diffraction measurements. The effect of the applied rubbing energy on the pretilt angle obtained is measured.
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