Control for orientation of liquid crystal molecular LB film and measurement for molecular orientation

液晶分子LB膜的取向控制及分子取向的测量

基本信息

批准号：
15560014
负责人：
KUMAGAI Koichi
金额：
$ 2.05万
依托单位：
Miyagi National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

1. Evaluation for molecular orientation of liquid crystal molecular LB filmThe surface density of a liquid crystal (LC) molecule and the direction of pulling up of the anhydrous synthetic quartz substrate and the CaF_2 substrate were controlled using the making device of Langmuir Blodgett (LB) film improved by using this research expenditure. Using the device, LC LB films were made as experimental samples. To examine the contribution of the microscopic local field effect of LC molecules and between LC molecules and rubbed polystyrene (PS) film to the molecular orientation of the LC LB film, the sample rotation angle dependency of second harmonic intensity was measured as a function of the polarization angle of fundamental light. Anisotropy of the molecular orientation of the rubbed PS film and of the molecular orientation of the LC LB film adsorbed on the PS film were analyzed with consideration of the microscopic local field effect and of the pulling up direction of the LC LB film. Th … More e LC LB film at surface density 3×10^<14> molecule/cm^2 pulled up with parallel and perpendicular to rubbing direction, it had been understood that the direction of the molecular orientation of LC molecules had changed. The LC LB film was pulled up in parallel and perpendicular to the rubbing direction, respectively. The LC LB film pulled up parallel was oriented to perpendicular direction against the rubbing direction. However, the LC LB film pulled up perpendicular was oriented to parallel direction against the rubbing direction. It was suggested that the control for the molecular orientation of the LC LB film become possible because it controlled the direction of pulling up when LC LB film was made using LB method.2. Evaluation for molecular orientation of liquid crystal cellLC cells were made by using LC LB films as stated above, the polarizing microscope image was observed, the polarized light infrared absorption spectrum was measured, and it decided it compared with two infrared rays colors of the LC cell. The LC cell that the LC LB film had not adsorbed either made and it compared it. As a result, it was concluded strong anisotropy for the molecular orientation seen in the LC LB film was seen to be eased by the LC bulk, and it was almost equal for the orientation as the LC cell. Less

1。评估液晶分子LB膜的分子取向，液晶（LC）分子的表面密度以及使用Langmuir BlodgetT（LB）膜的制造设备通过使用此研究的Expertion来控制了无水合成石英底物和CAF_2底物的方向。使用该设备，将LC LB膜作为实验样品制作。为了检查LC分子以及LC分子和摩擦聚苯乙烯（PS）膜之间的微观局部场作用的贡献，以LB LB膜的分子取向，第二次谐波强度的样品旋转角度依赖性被用作基本光的极化角的函数。通过考虑微观局部局部场效应和LC LB膜的向上的方向，分析了橡胶PS膜的分子方向以及在PS膜上吸附的LC LB膜的分子方向的各向异性。 ……在表面密度3×10^<14>分子/cm^2的表面密度上的更多E LC LB膜与平行且垂直于摩擦方向拉起，已经理解，LC分子的分子方向的方向发生了变化。 LC LB膜平行地拉起，并垂直于摩擦方向。 LC LB膜平行地拉起，并垂直于摩擦方向。将平行拉的LC LB膜定向至垂直方向，以靠近摩擦方向。然而，将垂直线拉的LC LB膜定向到橡胶方向平行方向。有人提出，LC LB膜的分子方向的控制成为可能，因为它控制了使用LB方法进行LC LB膜时拉的方向。2。通过使用LC LB膜进行了液晶晶体细胞分子方向的评估，如上所述，观察到偏振显微镜图像，测量了极化的光红外抽象光谱，并确定与LC细胞的两种红外射线相比。 LC LB膜没有吸附制作的LC细胞，并进行了比较。结果，得出结论，在LC LB膜中看到的分子方向的强烈各向异性被LC的大量视为容易，并且与LC细胞几乎相等。