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Proceedings Paper

Electro-optical properties of mixtures with the induced antiferroelectric phase
Author(s): Wojciech Kuczynski; Roman S. Dabrowski; S. Gauza; F. Goc; Jerzy Hoffmann; Krzysztof L. Czuprynski; J. Drzewinski; K. Kenig
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Paper Abstract

In some mixtures composed of ferroelectric components the induced antiferroelectric phase was observed. Two mixtures of this kind, both exhibiting antiferroelectric order in a broad concentration range, were investigated. The effect of electric field of various strengths on optical properties of these mixtures was studied. In small electric fields the modulation of light intensity occurred, which amplitude in ferroelectric phase was much higher than in the antiferroelectric one. In mixtures with induced antiferroelectric phase we detected a large hysteresis of the transition temperature between ferroelectric and antiferroelectric sates. In high electric fields thresholdless switching was observed in the hysteresis range. The presence of the thermal hysteresis of the CA* - C* phase transition can be considered as a mark of the V-shaped switching. In bulk samples the C*- phase is stable in, this temperature region, where the V- shaped switching was observed in thin samples.

Paper Details

Date Published: 12 May 2000
PDF: 5 pages
Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); doi: 10.1117/12.385662
Show Author Affiliations
Wojciech Kuczynski, Institute of Molecular Physics (Poland)
Roman S. Dabrowski, Military Univ. of Technology (Poland)
S. Gauza, Military Univ. of Technology (Poland)
F. Goc, Institute of Molecular Physics (Poland)
Jerzy Hoffmann, Institute of Molecular Physics (Poland)
Krzysztof L. Czuprynski, Military Univ. of Technology (Poland)
J. Drzewinski, Military Univ. of Technology (Poland)
K. Kenig, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 4147:
Liquid Crystals: Chemistry, Physics, and Applications

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