Observation of 3-D Birefringence Distribution of Polymer Thin Film by Near-Field Optical Microscope

摘要：

According to development of optical engineering, the measurement accuracy of optical components and materials has become more important. For example, birefringence in polymer thin film is an essential issue for development of liquid crystal display. In this study, after a PVA (poly vinyl alcohol) film was embedded by photopolymer and cut by ultramicrotome, a cross-sectional birefringence distribution of cut film was observed by birefringence contrast scanning near-field optical microscopy (B-SNOM). As a result, three dimensional birefringence ratios were calculated and birefringence of parallel to stretching direction was larger than that of vertical one. This result shows that cross-sectional birefringence distribution is yielded by inhomogeneous distribution of molecular alignment in film material according to asymmetry stretching.

作者: J Qin H. Nagai T. Numata Y. Otani N. Umeda

作者单位: Tokyo University of Agriculture and Technology2-24-16 Nakacho, Koganei, Tokyo 184-8588,Japan

会议类型: 国际会议

会议名称: 第四届仪器科学与技术国际会议( 4th International Symposium on Instrumentation and Science and Tcchnology)

会议地点: 哈尔滨

会议语种:英文

页码: 926-931

在线出版日期: 2006-08-08（万方平台首次上网日期，不代表论文的发表时间）