Moire Inversion Method for Characterizing Planar Periodic Structure and its Application
Moiré inversion method is introduced to characterize the planar periodic structure of objects such as photonic crystal class. It is implemented through seeking the specimen grating equation or the virtual strain distribution, and is a nonlocal, noncontact, nondestructive and economical optical measuring method. The whole shape characteristic of the planar periodic structure in several hundreds of millimeter, as well as the dimension at micro-and nano-scale, can be obtained using this method. Principle of moiré inversion method is introduced in this text. Applying this method into identifying the structure of a Japanese cabbage butterfly wing, gratings composed of a cluster of curves with pitches of a little less than 438nm were found on multi-scales of butterfly wing, which provides the possibility for further explaining its attractive iridescence.
moire inversion method periodic structure butterfly wing virtual strain
Qinghua Wang Huimin Xie Satoshi Kishimoto Fulong Dai
Department of Engineering Mechanics, Tsinghua University, Beijing, 100084 PR China National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
国际会议
北京
英文
1-5
2008-10-23（万方平台首次上网日期，不代表论文的发表时间）