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A Method for Indirectly Measuring the Second Sound Velocity in Smectic a Liquid Crystals

 

作者: D.G. Gleed,   J.R. Sambles,   G.W. Bradberry,  

 

期刊: Liquid Crystals  （Taylor Available online 1988）
卷期: Volume 3, issue 12  

页码: 1689-1697

 

ISSN:0267-8292

 

年代: 1988

 

DOI:10.1080/02678298808086630

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

We present a simple method by which the variation of the hypersound velocity with the angle between the liquid crystal director and the scattering plane is fitted to theory. Combinations of bulk elastic constants can be obtained together with a value for the second sound velocity. This method is used to study the smectic A phase of 4-n-octyl-4′-cyanobiphenyl. We compare our results with previous work.

 

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