基于液晶-聚合物复合材料的电控调光器件研究进展

Research progress of electric controlled switchable glass based on liquid crystal-polymer composite

液晶是一种具有优良光学性能及外场响应特性的材料,在调光领域展现出巨大的发展潜力。近年来,随着建筑能耗的增长与人们环保意识的增强,能够对不同波段的太阳光线进行动态调控的液晶调光器件受到了人们的广泛关注。相较于传统的单一液晶材料,液晶-聚合物的复合材料可以通过调节液晶与聚合物网络间的相互作用实现对入射光的动态调控,并通过调节液晶螺距的大小来精准调控入射光的波段,拓展了液晶材料的光电性能,是制作调光器件的理想材料。另外,基于电响应液晶材料的调光器件具有易于控制、效果稳定、响应快速等特点,能够满足人们的即时需求,得到了研究人员的广泛关注。本文主要对近年基于聚合物分散液晶、聚合物稳定液晶、聚合物稳定胆甾相液晶的电响应调光器件的研究进展进行了系统总结,并对其未来的发展趋势做出了展望。

Liquid crystals,with external filed induced tunability of optical properties,has great application advantages in switchable glass.Compared with traditional single liquid crystal materials,liquid crystalpolymer composites can achieve dynamic regulation of incident light by adjusting the interaction between liquid crystals and polymer networks.Therefore,the photoelectric properties of liquid crystal-polymer composites are more excellent.The electrical response switchable glass based on polymer liquid crystal material has the characteristics of easy control,stable effect,fast response,etc.,which can meet people’s immediate needs and has been widely concerned by researchers.In this paper,the research progress of electric controlled switchable glass based on polymer dispersed liquid crystals(PDLCs),polymer stabilized liquid crystals(PSLCs)and polymer stabilized cholesterol phase liquid crystals(PSCLCs)in recent years is reviewed and discussed,and the future development trend of these switchable glasses is forecasted.