New method for measuring polar anchoring energy of nematic liquid crystals

被引：9
|
作者：
Murauski, Anatoli [1 ]
Chigrinov, Vladimir [1 ]
Kwok, Hoi-Sing [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, ECE Dept, Kowloon, Hong Kong, Peoples R China
来源：
LIQUID CRYSTALS | 2009年 / 36卷 / 08期
关键词：
anchoring energy; liquid crystal; reflective measurements; surface tilt angle; CELL;
D O I：
10.1080/02678290903047136
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new method for measuring a polar anchoring energy of nematic liquid crystals (LCs) is proposed. A variation of LC tilt angle on the surface with an applied electrical field was determined by a reflective method. The twisted LC cell configuration was selected to compensate a contribution of the induced birefringence in the reflective spectra. The electrical field controlled reflectance was used to analyse the potential form of the polar anchoring energy and to define the anchoring strength. The proposed method is applicable for 2-5 m thick LC cells.
引用
收藏
页码：779 / 786
页数：8
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