Affiliation: | 1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1‐1 Namiki, Tsukuba, Ibaraki 305‐0044 (Japan), Fax: (+81)?29‐860‐4635 http://www.nims.go.jp/mana/members/independent_scientist/y_yamauchi/index.html;2. Faculty of Science & Engineering, Waseda University, 3‐4‐1 Ohkubo, Shinjuku, Tokyo 169‐8555 (Japan), Fax: (+81)?3‐5286‐3199;3. PRESTO, Japan Science and Technology Agency (JST), 5 Sanban‐cho, Chiyoda, Tokyo, 102‐0075 (Japan) |