摩擦基板间液晶薄层的Monte Carlo模拟  

Monte Carlo Simulation of Liquid Crystal Film Between Rubbed Substrate

作　　者：崔建坡[1] 张志东[1] 张艳君[1] 

机构地区：[1]河北工业大学理学院,天津300130

出　　处：《液晶与显示》2005年第2期123-127,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：河北省高校重点学科建设资助项目;河北省自然科学基金资助项目(No.103002)

摘　　要：利用MonteCarlo方法模拟平行基板间液晶薄层的指向矢分布。在基板表面处,液晶薄层受到表面作用势的作用使液晶分子沿面平行排列,采用Lebwohl Lasher模型,将分子质心固定在简单立方晶格的格点上,并对此格点模型赋以周期性边界条件,然后将简立方格点模型分为平行于基板的20个分子薄层,得到各薄层的指向矢分布的数值结果。计算中同时考虑了基板作用引起的双轴对称性。By the Monte Carlo simulation, the order distribution of the thin liquid crystal films between the two rubbed substrate is studied. In the surface of the substrate the liquid crystal molecules parallel to the surface as a consequence of the surface potential. Adopting the Lebwohl Lasher model, the mole cular centers of mass are located at the sites of the simple cubic lattice with period boundary conditions. The simple cubic lattice is separated into 20 molecular layers paralleling to the rubbed surface and the numerical calculations are made for each layers. In addition, the symmetry of the biaxiality induced by the surface action is considered in this simulation.

关 键 词：液晶层 表面作用势 摩擦基板 MONTE CARLO模拟 

分 类 号：O753.2[理学—晶体学]