液晶与显示2011，Vol.26Issue(3)：301-305,5.DOI:10.3788/YJYXS20112603.0301
对称Y型分子向列相液晶的相变
Phase Behavior of Symmetric Y-Shaped Molecules
王慧1
作者信息
- 1. 解放军理工大学理学院,江苏南京211101
- 折叠
摘要
Abstract
Based on the V-shaped molecule of biaxial nematic liquid crystal, a model of symmetric Y-shaped molecule is developed.In this model the Y-shaped molecule is abstracted to three linked rod-like arms.Using a simple biaxial molecular interaction model in nematic liquid crystal, the interaction energy between two molecules is obtained by the superposition of all rod-to-rod interactions.With the mean field approximation, the free energy of the system is derived and the result shows that the free energy is the function of order parameters.The relationship between the Y-shaped molecule and its ability to form a biaxial nematic phase is established.And phase transitions from isotropic to uniaxial nematic (NI phase transition) and from uniaxial to biaxial nematic (IB phase transition) are obtained.关键词
向列相液晶/Y型分子/相变/平均场理论Key words
nematic liquid crystal/ Y-shaped molecule/ phase transition/mean field theory分类
数理科学引用本文复制引用
王慧..对称Y型分子向列相液晶的相变[J].液晶与显示,2011,26(3):301-305,5.
