Research progress of ferroelectric nematic liquid crystals

ZHAO Xiu-hu; HUANG Ming-jun; Satoshi AYA

doi:10.37188/CJLCD.2022-0130

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Research progress of ferroelectric nematic liquid crystals

Liquid Crystal Frontier | 更新时间：2023-03-15

- Research progress of ferroelectric nematic liquid crystals
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 1, Pages: 77-94(2023)
- 作者机构：
  
  1.华南理工大学华南软物质科学与技术高等研究院，广东广州 510640
  2.华南理工大学前沿软物质学院，广东广州 510640
- 作者简介：
- 基金信息：
  
  International （Regional） Cooperation and Exchange Project of National Natural Science Foundation of China(12050410231);National Natural Science Foundation of China for Young Scientists(11904106)
- DOI：10.37188/CJLCD.2022-0130
  CLC：
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ZHAO Xiu-hu, HUANG Ming-jun, Satoshi AYA. Research progress of ferroelectric nematic liquid crystals. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):77-94(2023)
DOI：

ZHAO Xiu-hu, HUANG Ming-jun, Satoshi AYA. Research progress of ferroelectric nematic liquid crystals. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):77-94(2023) DOI： 10.37188/CJLCD.2022-0130.

摘要

铁电性是电介质具备的一种自发极化状态，普遍发现于对称性较低的晶（固）体材料体系。流体或高流动性软物质材料通常呈现高对称性，因而与铁电性的要求是相违背的。引入强极性或者铁电性是液晶新材料领域备受关注的策略，对开发新型柔性光电器件具有重要意义，在液晶乃至软物质流体材料中一直充满挑战性。相比于传统的液晶和软物质材料，铁电向列相液晶具备多种变革性性质，包括超高介电常数、强非线性光学响应、低电压驱动以及高流动性等，为开发新型先进的柔性光学和电学器件提供了新的可能性。本文介绍了铁电向列相液晶的发展历史，重点阐述了铁电向列相液晶与分子结构之间的关系、物理拓扑结构及特征物性，总结并展望了铁电向列相液晶的未来应用前景，尤其是在新型存储设备、柔性高端光电子器件、非线性光学等领域具有巨大潜力。

Abstract

Ferroelectricity is a spontaneous polarization state possessed by dielectrics， which generally occurs in crystalline （solid） material systems with low symmetry. Fluid or highly fluid soft matter systems usually exhibit high symmetry， which is contrary to the requirement of ferroelectricity. The introduction of strong polarity or ferroelectricity is a strategy that has attracted much attention in the fields of new liquid crystal materials and flexible optoelectronic devices. Compared with the traditional liquid crystals and soft matter systems， the ferroelectric nematic liquid crystals possess several revolutionary properties， including ultra-high dielectric permittivity， strong nonlinear optical response， low-voltage driving and high fluidity. It provides numerous possibilities for the development of novel advanced flexible optical and electronic devices. This review looks back the history of the foundation and development of the ferroelectric nematic liquid crystals， then， explains the relationship between the ferroelectric nematic liquid crystals and the molecular structure， physical topology， and characteristic properties. Finally， this review summarizes and makes a short perspective on the future applications by employing the ferroelectric nematic liquid crystals. The ferroelectric nematic liquid crystals have great potential in new memory devices， flexible high-end optoelectronic devices， nonlinear optics， and other fields.

关键词

铁电性液晶非线性光学铁电向列相极性

Keywords

ferroelectricityliquid crystalnonlinear opticsferroelectric nematicpolarity

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