模拟研究掺杂稀土氧化物的向列相液晶TEB30A磁光特性

Simulating the Magneto-optical Properties of the Nematic Liquid Crystal TEB30A Doped with Thulium Oxides

基于掺杂磁性粒子的欧勒-拉格朗日方程及液晶光学理论,通过数值模拟向列相液晶TEB30A掺杂磁性纳米稀土氧化物在外磁场中的透射谱,研究分析液晶样品掺杂磁性稀土氧化物的磁光性质.结果表明,微量磁性稀土氧化物的掺杂,没有改变液晶原有弹性,将液晶的饱和磁矩提高了一个数量级.这一掺杂技术法能实现削弱两底板对液晶分子的控制作用,达到调整液晶分子在两底板的锚定方向,从而使得控制向列相液晶TEB30A的外磁场强度降低.

Based on the Euler-Lagrange equation of the doped magnetic particles and the liquid crystal optical theory, by simulating the transmission spectrum of the nematic liquid crystal TEB30A doped with magnetic thulium oxides in an external magnetic field, the magneto-optical properties of these samples are studied. The results show that the micro-magnetic thulium oxide doped into the nemat-ic liquid crystal TEB30A doesn＇t change the original elasticity of the nematic liquid crystal TEB30A,and increases the saturation moment of the nematic liquid crystal TEB30A by one order of magnitude. It also reduces the base plate controlling,and adjusts the anchoring in- clination of the liquid crystal molecules at the base plate. The external magnetic field strength controlling the nematic liquid crystal TEB30A is also reduced.