1. Department of Material Science and Engineering, Faculty of Science and Technology, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, “Nanotubulites” Project, Japan Science and Technology, c/o NEC, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan, Institute of Research and Innovation, 1201 Takada, Kashiwa, Chiba 277-0861, Japan, and NEC Corporation, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan