相位延迟法平行排列丝状液晶在静磁场中扭曲效应研究

STUDY OF MAGNETICALLY INDUCED TWIST EFFECT IN PLANAR NEMATIC LIQUID CRYSTAL BY PHASE RETARDATION METHOD 

对平行排列５ Ｃ Ｂ（４′ｎｐｅｎｔｙ１４ｃｙａｎｏｂｉｎｐｈｅｎｙ１） 丝状液晶在静磁场中扭曲变形做了严格的数值解，给出了严格分布情况；利用光学“４ ４”矩阵算法，计算了线偏振光在严格分布下的传输情况；在实验方面，应用光学相位延迟法对平行排列５ Ｃ Ｂ 丝状液晶在静磁场中（ 温度２７ ℃） 线偏振光的通过情况进行了测量．理论计算和实验结果说明在非长螺距近似条件下可用线偏振光对平行排列丝状液晶的物理性质进行实验研究．

In this paper, numerical calculations of magnetically induced twist effect in planar nematic liquid crystal are presented. The transmission of polarized light passing through magnetically induced twist distribution in planar nematic liquid crystal is calculated with “4*4” matrix algorithm. On the experimental side, the optical phase retardation method is used to detect the magnetically induced twist effect in planar nematic liquid crystal 5CB(4′\| n \|penty1\|4\|cyanobiphenyl) at 27℃. Theoretical calculation and experimental results illustrate that polarized light can be used to study the twist effect in thin sample of planar nematic liquid crystal. PACC: 6470M; 1240E