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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 doped magnetic particles and the theory of liquid crystal optics, the transmission spectra of TEB30A-doped magnetic nano-rare-earth oxide in the external magnetic field were numerically simulated. The results show that the doping of rare earth oxides does not change the original elasticity of liquid crystal and increases the saturation moment of liquid crystal by an order of magnitude.The doping method can weaken the effect of the two substrates on the liquid crystal molecules To adjust the anchoring direction of the liquid crystal molecules in the two substrates so as to reduce the intensity of the external magnetic field for controlling the nematic liquid crystal TEB30A.