1. Department of Electrical and
Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
2. Department of Nanobiochemistry,
Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 minatojimaminami, Chuo-ku,
Kobe 650-0047, Japan