Control of nematic director orientation by exposing rubbed polyimide films to linearly polarized ultraviolet light

被引：27

作者：

Kim, JH ^{[1
]}

Shi, Y ^{[1
]}

Kumar, S ^{[1
]}

Lee, SD ^{[1
]}

机构：

[1] SEOUL NATL UNIV,SCH ELECT ENGN,SEOUL 151742,SOUTH KOREA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 21期

关键词：

D O I：

10.1063/1.120277

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The delicate interplay between the effects of mechanical rubbing and subsequent photo-induced chemical reactions on polyimide films has been studied for aligning liquid crystals. Exposure to linearly polarized ultraviolet (LPUV) light was found to profoundly alter the direction and the degree of molecular orientations obtained by rubbing. A simple model is presented to describe the observed changes in the director orientation. The results show that LPUV exposure can be very effectively used to control and fine-tune liquid crystal alignment. (C) 1997 American Institute of Physics.

引用

页码：3162 / 3164

页数：3

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