Department of Electrical Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan.
Opt Lett. 2012 Mar 15;37(6):1115-7. doi: 10.1364/OL.37.001115.
We present a simple yet efficient method to automatically fabricate the twisted nematic structure by one-step exposure on an empty glass cell coated with photocrosslinkable polymer liquid crystal (PCLC) films. The resultant photoalignment directions of two substrates can be orthogonal to each other by controlling the difference between the exposure energy for upper and lower PCLC films and the twisted nematic (TN) structure can be automatically fabricated. The vector grating liquid crystalline cell with TN structure was also fabricated by means of a developed method, and the diffraction properties were well explained by the theoretical calculation on the basis of Jones calculus.
我们提出了一种简单而有效的方法，通过在涂有光交联聚合物液晶 (PCLC) 薄膜的空玻璃盒上一步曝光，自动制造扭曲向列 (TN) 结构。通过控制上下 PCLC 薄膜曝光能量的差异，可以使两个基底的光取向方向相互垂直，并且可以自动制造 TN 结构。通过开发的方法还制造了具有 TN 结构的矢量光栅液晶盒，并基于琼斯计算理论对衍射特性进行了理论计算，得到了很好的解释。
