中文摘要：

以偶氮聚合物光致表面起伏光栅为模板，制备聚二甲基硅氧烷（PDMS）弹性印章，再以可溶性聚酰亚胺（PI）为“墨水”，在石英玻璃上压印出具有规则起伏结构的PI薄膜．由此制备的PI薄膜显示出很好的使液晶分子定向排列的效果．此方法成本低、效率高，是一种实用的液晶定向层薄膜制备方法。

英文摘要：

Elastomeric replica surface relief structures were prepared by molding poly （dimethylsiloxane） （PDMS） elastomers on the photo-inscribed surface-relief-gratings of azo polymer film. Then polymide （PI） solution was microcontact printing with the elastomeric PDMS on quartz slides. Good surface-relief-grating structures were formed on the quartz slides. Then the quartz slides covered with surface-relief-grating PI films were assembled to liquid crystal （LC） cell. The transmittance passing through the cell between crossed polarizers changed periodically with a regular 90° separation of the rotational angle. The pretilt angle of the cell was found to be 2.8°. The results showed that the PI film with surface-relief-grating structures by microcontact printing process has good liquid crystal alignment ability. This alignment method can be considered as potentially useful technology in the future LC display （LCD） industry.