摘要
基于分子两体势研究向列相液晶的形变。该两体势是空间各向异性的并且依赖于液晶的弹性常数。理论处理中假定具有理想向列序,这意味着分子长轴取向方向与液晶指向矢是重合的,而总自由能等于总相互作用能。通过解析形式研究3种基本的弗雷德里克兹转变,得到了势参数与弹性常数的又一关系。通过MonteCarlo模拟方法研究了新两体作用势所描写向列相的热力学性质。
Distortions of nematic liquid crystals are studied based upon the molecular pair potential model which is spatially anisotropic and dependent on elastic constants of liquid crystals. The perfect nematic order is assumed in the theoretical treatment, that means the orientation of the molecular long axis coincides with the director of liquid crystal and the total free energy equals to the total interaction energy. Three kinds of the basic Freederieksz transition are investigated analytically and a new form of potential parameters related to the elastic constants Ki is obtained, The thermodynamie properties of nematies described as pair potential model are studied by Monte Carlo simulations.
出处
《液晶与显示》
CAS
CSCD
北大核心
2006年第3期201-205,共5页
Chinese Journal of Liquid Crystals and Displays
基金
河北省自然科学基金资助项目(No.103002)
河北省高校重点学科建设资助项目
