液晶与显示2017，Vol.32Issue(3)：196-205,10.DOI:10.3788/YJYXS20173203.0196
电场对负性向列相液晶薄盒影响的研究
Influence of electric field on the thin negative namatic liquid crystal cell
摘要
Abstract
Based on the Landau-de Gennes theory, the influence of electric field on the state of liquid crystal (LC) within the thin vertical aligned (VA) cell and the thin inverse twist nematic (ITN) cell has been investigated, using the relaxation iterative method.Two systems have the same tilt angle behavior under the same electric field and same cell gap.Meanwhile, the variation of biaxialities and eigenvalues only depend on the tilt angle.When the cell gap is bigger than a critical gap, the LC system has positive order parameter, and the twist angle of ITN changes from lineation to nearly 45° with the increase of electric field.When the cell gap is under the critical value, a negative order parameter uniaxial state will appear at a certain electric field.The variation of the twist angle in the ITN cell shows a deviation from lineation as the electric filed increasing, and this variation will show a hysteresis effect within a certain electric field range.关键词
Landau-Gennes理论/负序参数单轴态/本征值交换/临界盒厚Key words
Landau-Gennes theory/negative order parameters uniaxial state/eigenvalue exchange/critical cell gap分类
数理科学引用本文复制引用
张晶,陈思博,孙洋,张志东..电场对负性向列相液晶薄盒影响的研究[J].液晶与显示,2017,32(3):196-205,10.基金项目
国家自然科学基金(No.11374087) Supported by Natural Science Foundation of China (No.11374087) （No.11374087）
