液晶与显示, 2020, 35 (7): 685, 网络出版: 2020-10-27   

蓝相液晶晶体结构与结构色

Crystal structures and structural colors of blue phase liquid crystals
作者单位
南方科技大学 电子与电气工程系, 广东 深圳 518055
摘要
蓝相液晶具有许多不同寻常的光学特性, 如快速的响应速度(亚毫秒量级), 可见光范围的布拉格反射, 光学各向同性等。这些特性使得蓝相液晶在电光器件领域有着广泛的应用前景。近年来, 除显示领域以外, 蓝相液晶在聚合物蓝相液晶薄膜、晶格结构、结构色, 以及可调谐方面取得了一系列新的进展。这些进展不仅深化了人们对蓝相液晶制备和基本结构认知, 同时也极大扩展了其应用范围。本文侧重阐述近年来蓝相液晶在晶格结构以及结构色方面的研究进展。首先介绍蓝相液晶薄膜的制备方法和进展; 其次介绍蓝相液晶晶格结构, 包括单畴晶格、单晶晶格和结构色方面的研究进展; 最后介绍可调谐的蓝相液晶晶格结构, 主要包括电场、光场对蓝相晶格的调控作用。
Abstract
Blue phase liquid crystals possess several extraordinary optical properties, such as fast response time (sub-milliseconds), Bragg reflection in visible range, optical isotropic property. These properties make blue phase liquid crystals have a good application in electro-optical devices. Besides of displays, blue phase liquid crystals demonstrate series of new developments in polymer-stabilized blue phase film, crystal lattice structure, structural color and tunable application recently. These developments not only deepen cognitions in fabrication and basic structure of blue phase liquid crystals, and also broaden the applications of blue phase liquid crystals at the meantime. In this review, we discuss about the research developments of crystal lattice structure and structural color in blue phase liquid crystals in recent years. First, the fabrication and development of blue phase liquid crystals are introduced. Then, the recent developments of crystal lattice structure, including monodomain crystal, single crystal and structural color of blue phase liquid crystals are demonstrated. Last, the tunable crystal structure of blue phase liquid crystal, such as the effects of electric field and optical field on blue phase liquid crystals are shown.

续晓婉, 刘言军, 罗丹. 蓝相液晶晶体结构与结构色[J]. 液晶与显示, 2020, 35(7): 685. XU Xiao-wan, LIU Yan-jun, LUO Dan. Crystal structures and structural colors of blue phase liquid crystals[J]. Chinese Journal of Liquid Crystals and Displays, 2020, 35(7): 685.

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