1. Department of Bioengineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2. Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
3. Central Laboratory, Mitsubishi Materials Co., 14-1002, Mu Koyama, Naka, Ibaraki 311-0102, Japan
4. Department of Fundamental Engineering, Utsunomiya University, 7-1-2, Yoto, Utsunomiya, Tochigi 321-8585, Japan
5. Attract to Japan Co., 9-14-9, Takaya Takamigaoka, Higashi-Hiroshima, Hiroshima 739-2115, Japan
6. Science & Technology Institute, Co., 3-5-4 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan