De Vries SmA*-SmC* 相転移を行なう液晶の誘電分散の測定

江間 健司; 佐々木 裕司; 竹越 邦夫; 八尾 晴彦; 高西 陽一; 竹添 秀男

doi:10.11538/ekitou.2006.0.44.0

2006 Japanese Liquid Crystal Conference

Session ID : 1D09

DOI https://doi.org/10.11538/ekitou.2006.0.44.0

Conference information

Host: The Japanese Liquid Crystal Society

Name : Japanese Liquid Crystal Conference 20046

Location : [in Japanese]

Date : September 13, 2006 - September 15, 2006

Measurements of dielectric dispersion on liquid crystals showing de Vries SmA*-SmC* phase transition

*KENJI EMA, YUUJI SASAKI, KUNIO TAKEKOSHI, HARUHIKO YAO, YOICHI TAKANISHI, HIDEO TAKEZOE

Author information

Keywords: de Vries smecticA*-smecticC* phase transition, dielectric dispersion, critical phenomena

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Measurements of dielectric dispersion have been carried out over a frequency range of 1 Hz to 100 kHz on 8422[2F3] and TSiKN65 which are liquid crystals showing de Vries SmA*-SmC* phase transiton. The strength and relaxation frequency of the main dispersion have been studied. In the SmA* phase, it was found that the strength of the dispersion increases significantly on approaching the transition temperature, while the relaxation frequency lowers dramatically. We also plan to decide and discuss critical exponent values.

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