Photoinduced deformation Behavior of crosslinked azobenzene liquid-crystalline polymer films with unimorph and bimorph structure
Photoinduced deformation Behavior of crosslinked azobenzene liquid-crystalline polymer films with unimorph and bimorph structure
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DOI：
10.1080/15421400701680952
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发表时间：
2007-01-01
影响因子：
0.7
通讯作者：
Yu, Yanlei
中科院分区：
文献类型：
--
作者：
Kondo, Mizuho;Mamiya, Jun-ichi;Yu, Yanlei
将交联偶氮苯液晶聚合物（CALP）系统用于微集成执行器变得特别有吸引力。 CALP 可能会变形。由于光化学相变，在紫外/可见光照射下沿着介晶的排列方向。在本研究中，为了提高弯曲速度，制备了一个表面上均匀取向和另一表面上垂直取向（混合取向）的CALP薄膜，并研究了它们的弯曲行为。薄膜表现出光致弯曲，其方向由表面取向处理决定，并且当薄膜的两个表面同时照射时，弯曲速度大大提高。
The use of a crosslinked azobenzene liquid-crystalline polymer (CALP) system for micro-integrated actuators becomes especially attractive. CALPs can deform. along the alignment direction of mesogens upon irradiation of UV/visible light owing to photochemical phase transition. In this study, to improve the bending speed, CALP films with a homogenous alignment on one surface and a homeotropic alignment on the opposite surface (hybrid alignment) were prepared and their bending behavior was investigated. The films showed photoinduced bending whose direction was determined by the surface alignment treatments and the bending speed was greatly enhanced upon irradiation from both surfaces of the film at the same time.