CAJ | 학술논문

采用时域有限差分法(FDTD)研究了胆甾相液晶与蓝相液晶的旋光能力。首先计算了圆偏振光在平面态胆甾相液晶与蓝相液晶中的布拉格反射现象，从晶格结构和分子排列的角度对模拟结果做了讨论，研究了液晶折射率和螺距对布拉格反射现象的影响。其次研究了胆甾相与蓝相液晶夹在两正交偏振片间的漏光情况，用液晶的旋光能力对二者的相似和不同的现象进行了解释。
채용시역유한차분법(FDTD)연구료담치상액정여람상액정적선광능력。수선계산료원편진광재평면태담치상액정여람상액정중적포랍격반사현상，종정격결구화분자배렬적각도대모의결과주료토론，연구료액정절사솔화라거대포랍격반사현상적영향。기차연구료담치상여람상액정협재량정교편진편간적루광정황，용액정적선광능력대이자적상사화불동적현상진행료해석。
The Bragg reflection and optical rotatory power of cholesteric liquid crystal (ChLC)and blue phase liquid crystal (BPLC)are studied using finite-difference time-domain (FDTD)method. Firstly,the Bragg reflection of ChLC and BPLC is calculated,and the simulation results are discussed from the aspects of lattice structures and molecular arrangement.The effect of refractive index and pitch of liquid crystal on the Bragg reflection is also studied.The light leakage of the ChLC and BPLC sandwiched by the crossed polarizers is calculated,and the similar and different phenomena are ana-lyzed by the optical rotatory power of liquid crystal.