PDLC膜电学特性的研究  

Electrical Characters of PDLC Films

作　　者：钱祥忠[1,2] 

机构地区：[1]电子科技大学光电子技术系 [2]淮南工业学院数理系,安徽淮南232001

出　　处：《液晶与显示》2001年第1期22-25,共4页Chinese Journal of Liquid Crystals and Displays

基　　金：安徽省教委自然科学基金资助!(99JL0191)

摘　　要：采用球形液晶微滴均匀分布在聚合物中的物理模型， 导出了PDLC膜的介电常数和电场强度的表达式， 得到液晶微滴内的电场为均匀电场且方向与外加电场方向一致。 讨论了材料的平均介电常数和电导率、 外加电场的频率以及液晶微滴的体积比对液晶微滴内电场的影响。Dielectric constant and electrical field distribution are deduced with a physica l model assuming that ball-shaped liquid crystal microdroplets are homogeneousl y distributed in the polymer without any interaction. The result shows that the e lectrical field within liquid crystals is uniform and its direction is the same as that of t he impressed electrical field. It further discussed with respect to the avera ge dielectric constant, resistance of liquid crystal and polymer, angle frequenc y of impressed electrical field and the volume ratio of LC to polymer.

关 键 词：PDLC 电学特性 电场强度 角频率 聚合物分散液晶 介电常数 

分 类 号：TN104.3[电子电信—物理电子学] O753.2[理学—晶体学]