Helical Alignment of Field-Dependent Structures in Cholesteric Phase
Helical Alignment of Field-Dependent Structures in Cholesteric Phase
复制标题
胆甾相场相关结构的螺旋排列
DOI：
10.1080/00268948208072148
复制
发表时间：
1982
影响因子：
0.7
通讯作者：
S. Kurita
中科院分区：
文献类型：
--
作者：
H. Asai;M. Terasaki;T. Hasegawa;S. Kurita
摘要通过多次实验研究了胆甾相的场相关结构。我们选择分子层的方位角o和螺旋轴方向的倾角θ作为静态形变的分量，并通过数值定义了一个新的参数：螺旋排列程度q=2{1-[(Sin2 O)]}[(cos 2θ)]=2(1−r)q.对于完全螺旋排列，q=I，而对于螺旋排列消失的向列态，q=0.讨论了这些参数与实验量的关系，典型的Q，以及用Q测量胆甾相S取向级数的方法。
Abstract The field-dependent structure in cholesteric phase has been investigated using several experiments. We have selected the azimuthal angle of a molecular layer o and tilt angle in the direction of helical axis θ as the components of static deformation, and defined a new parameter as a degree of helical alignment by numerical value, Q = 2{1 – [(sin2 o)]}[(cos2 θ)] = 2(1 − r)q. For perfectly helical alignment, Q = I, while for nematic state with helical alignment disappearing, Q = 0. The relation between these parameters and experimentally determined quantities, typical Q, and the method to measure the orientational order S in cholesterics using Q, were discussed.