平行锚定和正交锚定液晶盒内胆甾相平面态液晶层指向矢排布随温度变化的特征

张路瑶; 马子寒; 李志广; 范志新; 张得全

doi:10.37188/CJLCD.2021-0084

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平行锚定和正交锚定液晶盒内胆甾相平面态液晶层指向矢排布随温度变化的特征

器件物理及器件制备 | 更新时间：2021-08-05

- 平行锚定和正交锚定液晶盒内胆甾相平面态液晶层指向矢排布随温度变化的特征
- Director arrangement of the cholesteric liquid crystals with temperature-dependent planar texture in parallel anchored and orthogonal anchored cells based on optical guided wave technology
- 液晶与显示 2021年36卷第8期页码：1084-1092
- 作者机构：
  
  1.河北工业大学理学院, 天津 300401
  2.河北工业大学国家技术创新方法与实施工具工程技术研究中心, 天津 300401
  3.天津耀皮工程玻璃有限公司, 天津 300409
- 作者简介：
  
  [ "张路瑶(1994-), 女, 天津武清人, 硕士研究生, 2018年于河南工业大学获得学士学位, 主要从事液晶与液晶器件物理方面的研究。E-mail: 1904138255@qq.com" ]
  [ "李志广(1978-), 男, 河北衡水人, 博士, 副教授, 2014年于河北工业大学获得博士学位, 主要从事液晶与液晶器件物理方面的研究。E-mail: zhglee@hebut.edu.cn" ]
- 基金信息：
  
  科技部创新方法工作专项(2018IM040300);国家自然科学基金(51805142)
- DOI：10.37188/CJLCD.2021-0084
  中图分类号： O753.2;TH691.9
- 收稿日期：2021-04-01，
  
  修回日期：2021-04-16，
  
  纸质出版日期：2021-08
- 稿件说明：
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张路瑶, 马子寒, 李志广, 等. 平行锚定和正交锚定液晶盒内胆甾相平面态液晶层指向矢排布随温度变化的特征[J]. 液晶与显示, 2021,36(8):1084-1092.

Lu-yao ZHANG, Zi-han MA, Zhi-guang LI, et al. Director arrangement of the cholesteric liquid crystals with temperature-dependent planar texture in parallel anchored and orthogonal anchored cells based on optical guided wave technology[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1084-1092.
张路瑶, 马子寒, 李志广, 等. 平行锚定和正交锚定液晶盒内胆甾相平面态液晶层指向矢排布随温度变化的特征[J]. 液晶与显示, 2021,36(8):1084-1092. DOI： 10.37188/CJLCD.2021-0084.

Lu-yao ZHANG, Zi-han MA, Zhi-guang LI, et al. Director arrangement of the cholesteric liquid crystals with temperature-dependent planar texture in parallel anchored and orthogonal anchored cells based on optical guided wave technology[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1084-1092. DOI： 10.37188/CJLCD.2021-0084.

摘要

为了研究胆甾相平面态液晶（Cholesteric liquid crystal with planar texture，CLCPT）层在上下表面取向平行（Parallel anchoring，PA）和上下表面取向垂直（Orthogonal anchoring，OA）两种液晶盒中指向矢排布随温度变化的特征，分别制备了PA和OA两种CLCPT液晶盒样品。构建了由梯形低折射率棱镜、匹配液、CLCPT液晶盒组成的全漏导模结构，采用全漏光学导波（Fully leaky optical guided wave，FLOGW）方法获得了在不同温度下反射率随内角（测试光线入射到CLCPT层上的入射角）变化的导波实验曲线

，将其与基于液晶弹性理论和多层光学理论模拟出的同一温度下的理论导波曲线

进行拟合，精准分析出在PA和OA盒内，CLCPT指向矢排布随温度变化的特征。此外，应用控制变量法测量出不同温度下胆甾相液晶（Cholesteric liquid crystal，CLC）双折射率实际参数值。

Abstract

In order to study director arrangement of the cholesteric liquid crystals layer with planar texture (CLCPT) in parallel anchored (PA) and orthogonal anchored (OA) cells with temperature changes

two samples of CLCPT in PA and OA cells were prepared respectively. A fully leaky guide mode structure consisting of two trapezoidal low refractive index prisms

the refractive index matching liquids and one CLCPT cell was constructed. The method of fully leaky optical guided wave (FLOGW) was introduced to measure the experimental curve of reflectivity

with inner angle (the incident angles of the test light incident on the CLCPT layer) at different temperatures. The temperature dependence of the theoretical curves revealed by simulations based on elastic theory of liquid crystal and multi-layer theory was in agreement with the experiment result

and the characteristics of CLCPT director arrangement with temperature changes in PA and OA cells were accurately analyzed. In addition

the actual birefractive index values of cholesteric liquid crystal (CLC) at different temperatures were measured by the control variable method.

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