斜入射下向列型液晶散射光光强和线宽分布

斜入射下向列型液晶散射光光强和线宽分布 INTENSITY AND LINEWIDTH DISTRIBUTIONS OF THE SCATTERED LIGHT BY NEM TIC LIQUID CRYSTALS AT OBLIQUE INCIDENCE 答孝义 Da Xiaoyi first-author 本文首先确定在进行向列型液晶散射实验时,样品正确的几何安排,接着引入斜入射方法,计算了MBBA在斜入射下散射光光强和线宽的分布。在此基础上,作者从测量斜入射下EE散射光的线宽分布入手,获得了MBBA的两个Frank弹性常数k 11 和k 33 。这一实验方法可能发展为测定向列型液晶弹性常数和粘滞系数的一个系统化手段。 In this paper, we first make it clear the correct way of positioning the sample being tested in nematic liquid crystal scattering experiments. After introducing the oblique method, the author further determines the Frank elastic constants K 11 and K 33 of MBBA by fitting the linewidths measured experimentally with equation（2）. This may suggest a systematic way of determining the viscoelastic coefficients of nematic liquid crystals by light scattering. 1986-02-01 2021-04-01 2