| 摘要 |
Disclosed is a structure that has a thickness of 100 µm or greater and has regular micropores. A microstructure includes an aluminum or aluminum alloy oxide film which has cylindrical micropores extending from a bottom surface to a top surface of the microstructure. The micropores are arrayed at the bottom surface so as to have a degree of ordering as defined by general formula (1) of at least 70%, the center-to-center distance between neighboring micropores is from 300 to 600 nm and the axial length of the micropores is at least 100 µm. |
