Selectively Aligned Polymer Film Growth on Obliquely Evaporated SiO2 Pattern by Chemical Vapor Deposition

Abstract
Polyazomethin films were grown by chemical vapor deposition using terephthalaldehyde and p-phenylenediamine gases on SiO2 film patterned in a 10-µm-wide stripe. When the SiO2 film was obliquely evaporated on a quartz substrate by tilting the substrate along the y-axis, while polymer chain alignment was random on the quartz, the chain on the SiO2 film aligned along the y-axis, which induced birefringence and dichroism selectively on the stripe pattern. When the SiO2 stripe was formed on a SiO2 film deposited by tilting the substrate along the x-axis, the chain direction in the stripe region was at right angles to that in the surrounding region.