Affiliation: | a Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan b Tokyo Bio R & D Center, Motortronics Laboratory, Tamagawa Seiki Co., Ltd., 4259-3 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8510, Japan c Quantum Nanoelectronics Research Center, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan d Integrated Research Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan e Department of Biological Information, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan |