相位延迟法液晶沿面排列瞬态热效应

TRANSIENT HEATING BEHAVIOR IN PLANAR NEMATIC LIQUID CRYSTAL USING PHASE RETARDATION METHOD 

用光学相位延迟法，以ＹＡＧ短脉冲激光进行激励，对丝状液晶沿面排列的瞬态热效应进行了观测、记录，并对实验结果作了部分讨论．实验结果表明，热效应可能导致液晶分子的重新定向，但液晶中掺入偶氮苯类，光致异构杂质对热效应影响不大。

Abstract By means of the optical phase retardation method the YAG laser was used to observe the transient heating behavior in planar nematic liquid crystals.According to the experimental results,heating effect may induce molecular reorientation in liquid crystals.Azo dye and photoisomerized dye in planar nematic liquid crystals have little effect on heating behavior,but the liquid crystal doped with chiral molecules shows temporary memory effect.