4 . mixture was made of chiral additive and liquid crystal polymer , which properties were studied . whether the mixture has ferroelectricity has been discussed , which would establish some bases for the research and application of the liquid crystal display materials and nonlinear optical materials in future 将液晶手性添加剂和液晶聚合物共混，并研究了共混物的性能，探讨了共混型丙烯酸酯类液晶聚合物的铁电性能，为将来的液晶显示材料及非线形光学材料的研究及应用奠定了基础。
2.
We have developed the theory of boundary shielding approximation of electric polarization , from which the values of spontaneous polarization of some typical ferroelectric materials can be derived . the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier . by introducing statistical method , four types of typical electric hysteresis loops of some common crystals and ceramics have been given , which are well consistent with the experimental results 利用电极化的边界屏蔽近似，可计算出一些典型铁电单晶的自发极化强度.铁电屏蔽电荷处于表面束缚极化子偶状态,其产生和湮没要跨越位垒.由统计方法给出的一些常见晶体和陶瓷的四种典型电滞回线形状，和实验观察到的结果一致
