Orientational diffusivities measurement by light-beating spectroscopy for a disk-like thermotropic nematic phase (ND)
作者:
T. Othman,
M. Gharbia,
A. Gharbi,
C. Destrade,
G. Durand,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 18,
issue 6
页码: 839-842
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508036700
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Using a light-beating technique and for an appropriate scattering geometry, we have measured separately the orientational diffusivitiesDsplayandDtwistfor an ‘hexa-n-alcanoyloxytruxene’ (HATX C12H25) sample which exhibits a disk-like thermotropic nematic phase (ND) between 57°C and 84°C.DsplayandDtwistare about 100 times weaker than those corresponding to rod-like thermotropic nematics. The deviation can be attributed to higher viscosities ηsplayand ηtwist.
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