1. ICORP-JST, Nanotubulites Project, c/o NEC Corporation, 34 Miyukigaoka, Tsukuba 305-8501, Japan, Institute of Research and Innovation, 1201 Takada, Kashiwa, Chiba 277-0861 Japan, and NEC Fundamental Research Laboratory, 34 Miyukigaoka, Tsukuba 305-8501, Japan