论文标题
通过非线性激光光刻结构的对齐层的方位角和极性锚定能
Azimuthal and polar anchoring energies of aligning layers structured by nonlinear laser lithography
论文作者
论文摘要
尽管事实是，在产生高质量液晶（LCS）对齐方式的情况下，各种表面都有不同的技术，但方位角和极性锚定能以及前倾斜角对于所有这些都是重要的参数。在这里，以某种方式对齐层进行修改，该层先前是由非线性激光光刻（NLL）形成的，该层在TI表面上具有高质量的纳米周期凹槽，最近提出了用于LC对齐的TI表面。在纳米结构的Ti表面过程中NLL的扫描速度的变化及其通过ITO涂层的进一步修饰，而聚酰亚胺膜的沉积已经使不同的对齐层具有不同的排列层，这些层的主要特征，即具有方位角和极性锚定能量。对于修饰的对齐层，获得了列Nematic E7（δε> 0）和MLC-6609（δε<0）的LC细胞的扭曲和倾斜角的依赖性。同样，在激光器加工过程中，测量了各向同性液体（甘油）和列表LCS的接触角和列表LCS的接触角。
In spite of the fact that there are different techniques in the creation of the high-quality liquid crystals (LCs) alignment by means of various surfaces, the azimuthal and polar anchoring energies as well as the pre-tilt angle are important parameters to all of them. Here, the modified by a certain manner aligning layers, previously formed by nonlinear laser lithography (NLL), having high-quality nano-periodic grooves on Ti surfaces, recently proposed for LC alignment was studied. The change of the scanning speed of NLL in the process of nano-structured Ti surfaces and their further modification by means of ITO-coating, and deposition of polyimide film has enabled different aligning layers, whose main characteristics, namely azimuthal and polar anchoring energies, were measured. For the modified aligning layers, the dependencies of the twist and pre-tilt angles for LC cells filled by nematic E7 (Δε > 0) and MLC-6609 (Δε < 0) were obtained. Also the contact angle for droplets of isotropic liquid (glycerol), and nematic LCs was measured for the various values of the scanning speed during the laser processing.
