不对称弱锚定沿面排列向列液晶盒的研究  

Study of Dissymmetric NLC Cells with Weak Anchoring and Planar Alignment

作　　者：张志国[1] 李丽[1] 杨国琛[1] 

机构地区：[1]河北工业大学物理研究所,天津300130

出　　处：《液晶与显示》2003年第3期205-211,共7页Chinese Journal of Liquid Crystals and Displays

基　　金：河北省自然科学基金资助项目

摘　　要：用解析方法研究了上、下基板锚定强度不同的弱锚定沿面排列向列液晶盒(不对称液晶盒),给出了指向矢倾角θ满足的方程和边界条件,讨论了它的解,导出Freedericksz转变的阈值场强和饱和场强。研究了由于上、下基板锚定强度不同而引起的对称性破缺,以及对称破缺和磁场强度之间的关系,发现了不对称液晶盒一些特殊的现象。作为应用的例子,讨论了一种测定基板锚定强度的新方法。With the analytical method, a weak anchoring and planar alignment nematic liquid crystal cell,whose substrates have different anchoring strength, has been studied(This is named dissymmetric NLC cell).The fundamental formula and the boundary conditions of obliquity θ have been given, the solutions of the equations have been discussed, as well as the threshold and saturation field strengths of Fréederisksz transition have been induced. Through studying the broken symmetry, which is resulted from the different substrate anchoring strength, and the relations between magnetic field and broken symmetry, some new and special phenomena have been found. As an example of applying, a new method of measuring substrate anchoring strength has been discussed.

关 键 词：不对称弱锚定 面排列向列液晶盒 阈值磁场 饱和磁场 对称破缺 磁场强度 不对称液晶盒 

分 类 号：O753.2[理学—晶体学]