Patterned alignment of liquid crystal on photopolymer by single-exposure photocuring process

We have promoted the complex patterned orientation of liquid crystal on pol yvinyl cinnamate (PVCi) substrates by a single-exposure technique using the photocuring process. The process involves the polymerization of the polyme r simultaneously by optical and thermal means. The information restored in the form of homogeneous or homeotropic orientation of the liquid crystal is nonerasable and permanent.