Twist distortion in rod/liquid crystal mixtures
Twist distortion in rod/liquid crystal mixtures
复制标题
棒/液晶混合物中的扭曲变形
DOI：
10.1080/02678292.2011.585249
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
A. Matsuyama
中科院分区：
文献类型：
--
作者：
Yamamoto;A.; Nagoe;A.; Fujimori;H;A. Matsuyama
介绍了一个描述刚性棒状分子(棒)和液晶(LC)分子混合物中扭曲变形的简单模型。我们考虑了杆与LCS之间的耦合，计算了外场作用下杆与LCS的平衡重取向角。我们发现，临界阈值与棒浓度的依赖关系是由于扭转弹性常数K22，2与棒的介电或磁各向异性χ2的比值而改变的。该理论可以定性地描述碳纳米管/液晶混合物的观察性质。我们还讨论了重定向动力学。
A simple model is introduced to describe the twist distortion in mixtures of a rigid rod-like molecule (rod) and a liquid crystal (LC) molecule. We take into account the coupling between rods and LCs and calculate the equilibrium reorientation angles of rods and LCs when an external field applies. We find that the dependence of the critical threshold on the rod concentration is changed due to the ratio of the twist elastic constantK22,2to the dielectric or magnetic anisotropy χ2of the rod. The theory can qualitatively describe the observed properties of carbon nanotube/LC mixtures. We also discuss the reorientation dynamics.