ORDER PARAMETER OF A NEMATIC LIQUID-CRYSTAL ON A ROUGH-SURFACE

被引:54
作者
BARBERI, R
DURAND, G
机构
[1] Laboratoire de Physique des Solides, Universite de Paris-Sud, Bâtiment 510
来源
PHYSICAL REVIEW A | 1990年 / 41卷 / 04期
关键词
D O I
10.1103/PhysRevA.41.2207
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We measure the surface order parameter Ss at the interface between the nematic liquid crystal p-methoxy-benzylidine-p-n-butyl-aniline and a rough glass plate. Roughness is induced by oblique evaporation of SiO. We observe a critical decrease of Ss when the surface roughness increases, just above the transition from planar to oblique orientation. This experiment supports the ordoelectric model to explain the oblique orientation of the nematic liquid crystal. © 1990 The American Physical Society.
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页码:2207 / 2210
页数:4
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