液晶Sc相的格胞模型

采用格胞模型，定义了Ｓｃ相分子相对格胞中心的取向序参量、质心位置序参量及两者耦合的序参量，得出平衡状态下分子质心作层状分布而分子取向的优先取向与层面法向倾斜．求出分子层厚度、指向矢倾斜角的表达式，并计算了它们随温度的变化，理论结果符合实验，

A Cell Model of Sc Phase Liquid Crystals

With cell model,the orientational order parameter,the posihonal order parameter and their coupling order parameter of molecules against cell centre are defined.The layer distribution of molecular mass centre and hit of director about layer is obtained in the equation condihon.The formular of myer thick,tiltangle of director is obtained,and them depend on temperature are calculated,the theory results are consistent with experiments.