期刊
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
卷 612, 期 1, 页码 33-45出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421406.2015.1044361
关键词
nematic-cholesteric phase transition; twist-untwist; Cholesteric Liquid Crystal; External Field
资金
- Grant-in Aid for Scientific Research [26400435]
- Ministry of Education, Culture, Sports, Science and Technology of Japan
We present a mean field theory to describe phase behaviors in mixtures of a flexible polymer and a cholesteric liquid crystal under an external magnetic or electric field. Taking into account a chiral coupling between liquid crystals under the external field, we examine twist-untwist phase transitions and phase separations in the mixtures. Depending on the strength of the external field, we predict cholesteric-paranematic (Ch+N), nematic-paranematic (N+pN), cholesteric-nematic (Ch+N) phase separations on the temperature-concentration plane. We also calculate spinodal regions, which are important in phase separation kinetics inside binodal lines.
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