光致形变液晶弹性体的研究进展

光能具有环保性、远程可控性、瞬时性等优异的特性，因此光响应性高分子材料受到越来越多的关注。光响应高分子材料是指吸收光能后，能够在分子内或分子间产生化学或物理变化的一类功能高分子材料。通过合理的设计，光响应高分子材料可以产生光致形变，完成诸如伸缩、弯曲、爬行、转动等一些复杂的运动；因此它可以制作成多种柔性智能执行器，在很多领域有着广泛的应用前景。笔者综述了近年来光致形变液晶弹性体材料及其在光驱动型柔性执行器方面的研究进展，并展望了该领域的发展前景。

Photo-induced deformation of liquid crystalline elastomers

Photoresponsive polymeric materials have attracted increasing attention due to the unique advantages of light energy such as clean, safe, remote controllable and transient. Photoresponsive polymeric materials are a kind of functional polymers that can absorb energy and undergo intra- or inter-molecular physical or chemical transformations. Through the rational design, photoresponsive polymeric materials undergo macroscopic shape changes and complicated movements such as contraction, bending, creeping, rotation, and so on. Therefore, they can be fabricated to a variety of intelligent soft actuators with a wide range ofapplications in many fields. This review describes photodeformable liquid crystalline elastomers as well as their research development in the field of light-driven soft actuators.