液晶聚合物分子排列调控的研究进展

液晶的应用不仅仅局限于电视或电脑,具有光响应性的液晶在许多领域都存在应用，如平板显示、光学领域、光驱动设备以及许多正在发展的微科技领域. 液晶作为一种中间相的物质，既表现出了液体的流动性，又具有晶态的分子规整排列的性质. 液晶软物质材料具有许多有趣的性质，如自组装性质；长程有序的流动性；分子协同作用；双折射性质和物理性质（光、力、和电）的各向异性；外场诱导的表面分子取向；以及液晶弹性体的刺激响应性形变. 文中综述了具有不同液晶分子取向排列的液晶聚合物的刺激响应性形变，着重介绍了光取向技术诱导液晶分子取向的液晶聚合物的刺激响应性形变行为，并展望了未来液晶材料的设计在微流体和微型机器人领域的潜在应用.

Research Progress in Modulation of Molecular Alignment of Liquid Crystalline Polymers

Liquid crystals (LCs) are such a kind of important materials that influence our life, which are not limited to displays such as televisions and personal computers. Combined with photoresponsive properties, LCs can also enable to develop a great variety of applications in various fields, including flat panel displays, photonics, photo-driven devices, and more recent nanotechnology. LCs demonstrate special characteristics of both mobility of an isotropic liquid and ordered regularity of a crystalline solid, thus termed as intermediate phase. The unique features of LCs provide liquid crystalline materials with interesting properties such as ability to self-assembly, fluidity with long-range order, molecular cooperation motion, birefringence and anisotropy in physical properties (optical, mechanical and electrical), molecular alignment at surfaces induced by external fields, deformation of LC elastomers responding to certain stimuli. Responsive deformation of LC polymers (LCPs) with different alignment of molecules is reviewed. Perspective and further applications in the future of LCPs in the field of micro fluid and micro robot are discussed.