电场频率对可双频驱动蓝相液晶温域及电光性能的影响

李辰悦; 王萌; 张翠红; 原小涛; 张兰英

doi:10.3788/YJYXS20193409.0849

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电场频率对可双频驱动蓝相液晶温域及电光性能的影响

材料与器件 | 更新时间：2020-07-05

- 电场频率对可双频驱动蓝相液晶温域及电光性能的影响
- Influence of electric field frequency on the blue phase temperature range and electro-optical property of dual-frequency-driven blue phase liquid crystal materials
- 液晶与显示 2019年34卷第9期页码：849-856
- 作者机构：
  
  1.北京科技大学材料科学与工程学院, 北京 100083
  2.中国矿业大学(北京) 机电与信息工程学院, 北京 100083
  3.西京学院理学院, 西安 710123
  4.北京科技大学化学与生物工程学院, 北京 100083
  5.北京大学工学院, 北京 100871
- 作者简介：
  
  [ "李辰悦(1988—), 男, 四川成都人, 博士研究生, 2011年于北京科技大学获得学士学位, 主要从事液晶及纳米粒子制备和功能化方面的研究。E-mail:li.rk@163.com" ]
  原小涛, E-mail：yuanxt@ustb.edu.cn
  张兰英, E-mail：zhanglanying@pku.edu.cn
- 基金信息：
  
  国家自然科学基金(51602007);国家自然科学基金(51573003);国家重点研发计划(2018YFB0703700);National Natural Science Foundation of China(51602007);National Natural Science Foundation of China(51573003);National Key R & D Program of China(2018YFB0703700)
- DOI：10.3788/YJYXS20193409.0849
  中图分类号： O753.2
- 收稿日期：2019-04-10，
  
  录用日期：2019-5-6，
  
  纸质出版日期：2019-09-05
- 稿件说明：
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李辰悦, 王萌, 张翠红, 等. 电场频率对可双频驱动蓝相液晶温域及电光性能的影响[J]. 液晶与显示, 2019,34(9):849-856.

Chen-yue LI, Meng WANG, Cui-hong ZHANG, et al. Influence of electric field frequency on the blue phase temperature range and electro-optical property of dual-frequency-driven blue phase liquid crystal materials[J]. Chinese journal of liquid crystals and displays, 2019, 34(9): 849-856.
李辰悦, 王萌, 张翠红, 等. 电场频率对可双频驱动蓝相液晶温域及电光性能的影响[J]. 液晶与显示, 2019,34(9):849-856. DOI： 10.3788/YJYXS20193409.0849.

Chen-yue LI, Meng WANG, Cui-hong ZHANG, et al. Influence of electric field frequency on the blue phase temperature range and electro-optical property of dual-frequency-driven blue phase liquid crystal materials[J]. Chinese journal of liquid crystals and displays, 2019, 34(9): 849-856. DOI： 10.3788/YJYXS20193409.0849.

摘要

为了制备快速响应的蓝相（BP）液晶电光器件，并研究其在不同电场频率下的响应，本文首先合成了双频液晶分子（DFLC），将其加入蓝相母体液晶中，得到了可双频驱动的蓝相液晶（DF-BPLC）材料。利用偏光显微镜（POM）在不同频率的电场下观察其织构及相变行为，通过添加DFLC，可以调控BP温域。在低频电场下，由于电场取向作用及DFLC的弯曲结构和挠曲电效应可使得BP温域得到拓宽。但在高频电场下，BP温域有所减小。所制备DF-BPLC材料既具有频率响应特性又具有优异的电光性能，在光电器件中有很好的应用前景。

Abstract

In order to obtain fast response electro-optic devices

a dual-frequency-driven blue phase liquid crystal (DF-BPLC) was obtained through preparing dual-frequency liquid crystal molecules and adding into a blue phase host. The texture and phase transition behavior of the DF-BPLC were observed by polarizing microscopy (POM) at different electric field frequencies

and it was found that it could have a great influence on the temperature range of blue phase (BP). Under low frequency electric field

the BP temperature range of DF-BPLC can be broadened under the effects of electric field orientation

bending structure and flexoelectricity of DFLC. The prepared DF-BPLC material exhibits not only frequency responsive characteristic

but also excellent electro-optic property

which may have great application prospects in optoelectronic devices.

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Keywords

references

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