胆甾相液晶弹性体的研究进展

Recent progress on cholesteric liquid crystal elastomer

胆甾相液晶弹性体(Cholesteric liquid crystal elastomer,CLCE)是一种新型的软智能材料,它将胆甾相液晶(Cholesteric liquid crystal,CLC)独特的光学性质与弹性体优异的力学性能结合到一起。相较于普通的CLC,CLCE具有可逆、无延迟的力学调控能力,将CLC刺激响应性的利用提升到了新的高度,在信息加密防伪、柔性致动器、力学传感等领域引起了越来越多的关注。随着相关研究的深入,CLCE的制备方法不断完善,材料性能不断提高,CLCE的各种潜在应用被挖掘出来。本文介绍了CLCE的基本特点、制备与取向方法,以及不同类型的外场刺激响应行为,并对CLCE的应用前景进行了展望。

Cholesteric liquid crystal elastomer(CLCE)is a new kind of soft smart material.It combines the unique optical properties of cholesteric liquid crystal(CLC)with the excellent mechanical properties of elastomer.Compared with ordinary CLC,CLCE adds reversible and delay-free mechanical regulation ability,which raises the utilization of stimulus responsiveness of CLC to a new height,and has attracted more and more attention in the fields of information encryption and anti-counterfeiting,soft actuator,mechanical sensing,etc.With the deepening of related research,the preparation method of CLCE is continuously improved,and the material properties are continuously enhanced,various potential applications of CLCE are explored.This paper introduces the basic characteristics,preparation and alignment methods,and different types of external-stimuli responsive behavior of CLCE.Finally,the application prospect of CLCE is prospected.