表面沟槽诱导双轴向列相液晶的弹性畸变

张志东; 叶文江; 张 鹭

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表面沟槽诱导双轴向列相液晶的弹性畸变

特邀报告 | 更新时间：2020-08-12

- 表面沟槽诱导双轴向列相液晶的弹性畸变
- Elastic Distortion of Biaxial Nematic Liquid Crystal Induced by Surface Grooves
- 液晶与显示 2010年25卷第1期页码：1-4
- 作者机构：
  
  河北工业大学理学院,天津 300401,E-mail: zhidong_zhang@yahoo.cn
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O753+.2
- 收稿日期：2009-03-20，
  
  修回日期：1900-01-02，
  
  网络出版日期：2010-02-20，
  
  纸质出版日期：2010-02-20
- 稿件说明：
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张志东;叶文江;张鹭. 表面沟槽诱导双轴向列相液晶的弹性畸变[J]. 液晶与显示, 2010,25(1): 1-4

ZHANG Zhi-dong;YE Wen-jiang;ZHANG Lu. Elastic Distortion of Biaxial Nematic Liquid Crystal Induced by Surface Grooves[J]. 液晶与显示, 2010,25(1): 1-4
张志东;叶文江;张鹭. 表面沟槽诱导双轴向列相液晶的弹性畸变[J]. 液晶与显示, 2010,25(1): 1-4 DOI：

ZHANG Zhi-dong;YE Wen-jiang;ZHANG Lu. Elastic Distortion of Biaxial Nematic Liquid Crystal Induced by Surface Grooves[J]. 液晶与显示, 2010,25(1): 1-4 DOI：

摘要

双轴向列相液晶在表面沟槽上锚定

3个指向矢之一平行于沟槽均匀排列。使用Berreman在研究单轴向列相时提出的弹性形变产生表面能的理论方法对双轴向列相液晶进行研究

得到了一个公式

在Berreman模型中它描写弹性畸变对表面锚定的贡献

但在双轴向列相中

这一公式描写当 n 指向矢沿着沟槽锚定时

m 指向矢受到沟槽表面的作用而产生的畸变能量。研究了双轴向列相液晶在表面沟槽上锚定的稳定性问题;稳定性条件在双轴向列相单一弹性常数近似下为 n 指向矢的弹性常数最大。

Abstract

Biaxial nematic liquid crystal is anchored by the grooves of a surface

so that one of the three directors is homogeneously fixed in direction of the grooves. This paper used a theoretical method proposed by Berreman

which the contribution of elastic origin to the surface energy of an uniaxial nematic liquid crystal. A formula was obtained which attributed the surface anchoring to the elastic distortion in the Berreman model

but in the biaxial nematics

it describes the distortion energy of the m director induced by the grooves of a surface

when the n director is anchored along the grooves. The stability of the n director around the grooves was studied. In one-constant model for each director

the rude condition is that the elastic constant of the n director is the maximum.

关键词

Keywords

references

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