特殊液晶光学材料——扭曲-弯曲向列相液晶及应用

余丽红; 刘炳辉; 沈冬; 王骁乾; 郑致刚

doi:10.37188/YJYXS20203507.0645

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特殊液晶光学材料——扭曲-弯曲向列相液晶及应用

新材料 | 更新时间：2020-07-13

- 特殊液晶光学材料——扭曲-弯曲向列相液晶及应用
- Special liquid crystal optical materials—Twist-bend nematic phase liquid crystals and the applications
- 液晶与显示 2020年35卷第7期页码：645-661
- 作者机构：
  
  1.华东理工大学物理系, 上海 200237
- 作者简介：
  
  [ "余丽红(1997-), 女, 安徽安庆人, 硕士, 2019年于华东理工大学获得学士学位, 主要从事液晶光学器件相关的研究。E-mail:yulihong526@163.com" ]
  [ "王骁乾(1984-), 男, 上海人, 博士, 讲师, 2014年于香港科技大学获得博士学位, 主要从事液晶微纳结构及光子器件研究。E-mail:xqwang@ecust.edu.cn" ]
  [ "郑致刚(1982-), 男, 浙江宁波人, 博士, 教授, 2009年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要从事液晶光学材料与应用器件研究。E-mail:zgzheng@ecust.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(61822504);国家自然科学基金(61705067);国家自然科学基金(51873060);国家自然科学基金(61575063)
- DOI：10.37188/YJYXS20203507.0645
  中图分类号：
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余丽红, 刘炳辉, 沈冬, 等. 特殊液晶光学材料——扭曲-弯曲向列相液晶及应用[J]. 液晶与显示, 2020,35(7):645-661.

Li-hong YU, Bing-hui LIU, Dong SHEN, et al. Special liquid crystal optical materials—Twist-bend nematic phase liquid crystals and the applications[J]. Chinese Journal of Liquid Crystals and Displays, 2020,35(7):645-661.
余丽红, 刘炳辉, 沈冬, 等. 特殊液晶光学材料——扭曲-弯曲向列相液晶及应用[J]. 液晶与显示, 2020,35(7):645-661. DOI： 10.37188/YJYXS20203507.0645.

Li-hong YU, Bing-hui LIU, Dong SHEN, et al. Special liquid crystal optical materials—Twist-bend nematic phase liquid crystals and the applications[J]. Chinese Journal of Liquid Crystals and Displays, 2020,35(7):645-661. DOI： 10.37188/YJYXS20203507.0645.

摘要

扭曲-弯曲向列相是一种手性向列相，具有纳米级螺距的倾斜螺旋结构。由于其负弯曲弹性常数、纳米级螺距以及非手性分子形成手性结构等性质，引起了世界各地科研工作者的广泛关注。本文回顾了扭曲-弯曲向列相研究的发展历程，重点介绍了对扭曲-弯曲向列相的特征、性能、分子运动、分子基团的研究，阐述了扭曲-弯曲向列相在外场作用下微观结构的变化以及对扭曲-弯曲向列相的理论及模拟研究的发展现状，并探讨了扭曲-弯曲向列相液晶的应用前景和发展趋势。本文从材料的特性、性能、应用等方面对扭曲-弯曲向列相液晶进行综述，旨在让广大读者对这种特殊液晶光学材料的相关研究有比较全面的了解，以此激发读者对扭曲-弯曲向列相液晶材料在相态结构、理论模拟乃至应用领域等方面更多的研究灵感。希望本文能够起到抛砖引玉的作用，从一定程度上对该领域的研究发展有所促进。

Abstract

Twist-bend nematic phase is a chiral nematic phase with an inclined spiral structure possessing nanometer helical pitch. Due to its negative bend elastic constant, nano-scale pitch, and chiral structure formed by achiral molecules, it has attracted widespread attention from researchers all over the world. This article reviews the development of twist-bend nematics, focuses on the study of the characteristics, properties, molecular motion, and molecular groups of twist-bend nematics, and illustrates the effects of twist-bend nematics under external fields. The microstructure changes and the development of theoretical and simulation research on twist-bend nematic phase, and the application prospects and development trends of twist-bend nematic liquid crystal are discussed. The aim of this article is to provide readers with a comprehensive understanding of the related research of the special liquid crystal optical materials through the review of the materials characteristics, properties, applications and other aspects of twist-bend nematic liquid crystals, and thus stimulate the readers' research inspiration on their phase structure, theoretical simulation, applications, etc. It is hoped that this paper can start a discussion and promote the research and development of this field to some extent.

关键词

液晶扭曲-弯曲向列相CB7CB分子基团

Keywords

liquid crystaltwist-bend nematic phaseCB7CBmolecular group

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