1. Nanotube Research
Center, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
2. Gatan Inc., 2-8-19
Fukagawa, Koto-ku, Tokyo 135-0033, Japan
3. JST/SORST, c/o NEC, 34 Miyukigaoka,
Tsukuba, Ibaraki 305-8501, Japan
4. Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033,
Japan
5. Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan