| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a useful structure having a novel shape, and provide a production method therefor. <P>SOLUTION: The structure includes a substrate and a coating material. The substrate includes a plurality of voids and a surface on which at least the plurality of voids are formed, and is formed such that a void ratio of the plurality of voids decreases one of two-dimensionally and three-dimensionally from an inner side of the substrate toward an outer side thereof. The coating material is formed on the surface of the substrate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
