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Bistable electro-optical switching in the smectic I* phase of a ferroelectric liquid crystal

 

作者: A.M. Biradar,   W. Haase,  

 

期刊: Liquid Crystals  (Taylor Available online 1990)
卷期: Volume 7, issue 1  

页码: 143-151

 

ISSN:0267-8292

 

年代: 1990

 

DOI:10.1080/02678299008029201

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The ferroelectric switching behaviour of the highly ordered smectic I* phase has been investigated in the mixture which shows a S*Iphase at room temperature. The bistability was obtained in a 3.5μm thick cell. Director switching and the reorientation processes have been studied by applying symmetric square and triangular wave pulses. It has been found that an asymmetric switching occurs in the smectic I* phase for low electric fields due to the hexagonal ordering of the molecules in the layer. This asymmetric switching was confirmed by optical microscopy and four stable states have been observed for low electric field. For higher electric fields only one state is stabilized which results in symmetric switching by both methods in the smectic I* phase.

 

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