Chirality, surface anchoring, and the cholesteric-smectic A phase transition
作者:
KarlA. Crandall,
Charles Rosenblatt,
R.M. Hornreich,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 18,
issue 2
页码: 251-256
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508036620
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Magnetic Freedericksz transition measurements were performed on samples of chiral and racemic mixtures in the cholesteric/nematic phase. We found that the quantity Ф, which is defined as the threshold fieldHthtimes the cell thickness, is larger for the chiral than for the racemic mixtures. This result is inconsistent with chiral contributions to the anchoring strength potential. Instead, the data support a model by Lubensky wherein the transition temperature to the smectic A phase is suppressed in a chiral liquid crystal.
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