Electrooptic Soft Mode Response of Compounds Exhibiting the Antiferroelectric Phase
作者:
S. Sarala,
Arun Roy,
N.V. Madhusudana,
H.T. Nguyen,
C. Destrade,
P. Cluzeau,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 261,
issue 1
页码: 1-13
ISSN:1058-725X
年代: 1995
DOI:10.1080/10587259508033447
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We report measurements on the electrooptic response of thin samples (∼2-5 μm) of two antiferroelectric liquid crystals. All the phase transitions in these compounds can be very easily detected using this technique. We have been able to measure such an electrooptic effect for the first time in the antiferroelectric and smectic I* phases of a tolane compound. The response shows a relaxation at high frequencies (∼10 KHz) and is at-tributed to a soft mode which produces an asymmetry in the molecular tilt in successive layers.
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