Surface evanescent field characterisation of antiferroelectric liquid crystals

被引：2

作者：

Beccherelli, R ^{[1
]}

Judge, LA ^{[1
]}

Mottram, NJ ^{[1
]}

Elston, SJ ^{[1
]}

机构：

[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2001年 / 358卷

关键词：

antiferroelectric liquid crystals; total internal reflection; surface evanescent field; high quality alignment;

D O I：

10.1080/10587250108028286

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper we report a study of the dynamics of antiferroelectric liquid crystals by using simultaneous total internal reflection and transmission. In devices having both substrates coated with a polyimide, but only one rubbed, we found that the optic axis of the liquid crystal region close to the unrubbed substrate deviates from the rubbing direction less than the hulk. in switching experiments we find that this region is also slower then the bulk and it is virtually free from the undesired pretransitional effect. We also found an asymmetry in the switching of the surface region and we use a simple model to account for it.

引用

页码：263 / 274

页数：12