光致形变偶氮苯液晶驱动器  

Photoinduced deformation of azobenzene liquid crystal actuator

作　　者：刘俊超[1] 王京霞[1] 江雷[1] LIU Jun-chao;WANG Jing-xia;JIANG Lei(Key Laboratory of Bio-inspired Materials and Interfaces Sciences, Technique Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]中国科学院理化技术研究所仿生材料与界面科学重点实验室,北京100190

出　　处：《液晶与显示》2022年第2期217-240,共24页Chinese Journal of Liquid Crystals and Displays

基　　金：国家自然科学基金(No.51873221,No.52073292,No.51673207,No.51373183);国家科技部基金(No.2017YFA0204504);中国科学院与荷兰合作研究项目(No.1A111KYSB20190072)。

摘　　要：驱动器以其优良的性能和广阔的应用前景,在软机器人、人工肌肉等领域引起了广泛的研究兴趣。通过将偶氮苯分子引入到驱动器材料中,并基于偶氮苯分子可逆的光致异构化过程,可以实现无接触、精确控制、低能耗的光响应驱动器。经过多年的发展,偶氮苯液晶驱动器材料历经了从最初的聚硅氧烷类、聚丙烯酸酯类等到先进的动态酯交换网络等。驱动材料的发展进一步促进了驱动形式的多样化和功能化。偶氮苯液晶驱动器的驱动形式从简单的弯曲、螺旋、震荡到更为实用化的光控马达、提拉重物、微量液体运输等。本文总结和评述了偶氮苯液晶驱动器的发展历程、典型应用和目前存在的问题等,最后展望了其在能源转换领域的应用前景。Actuator has aroused enormous research avocation due to its excellent performance and promising applications in the field of soft robots,artificial muscles,etc.By introducing azobenzene mesogens into the actuation material,a non-contact,precise control,and low energy consumption photo-responsive actuator can be realized based on the reversible photoisomerization process of azobenzene mesogens.After years of development,the materials of azobenzene liquid crystal actuator have gone through the initial polysiloxanes,polyacrylates,etc.,to advanced dynamic transesterification networks.The development of actuation materials has further promoted the diversification and functionalization of actuation forms.The actuation form of the azobenzene liquid crystal actuator ranges from simple bending,twisting,and oscillating to more practical light-controlled motors,lifting heavy objects,micro liquid transportation and etc.This paper summarizes and reviews the development history,typical applications,and current problems of the azobenzene liquid crystal actuator.Finally,its application prospect in the field of energy conversion is prospected.

关 键 词：光致形变 偶氮苯液晶 驱动器 能源转换 智能材料 

分 类 号：O753.2[理学—晶体学]