1. Department of Electrical Engineering and Computer Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
2. Global Research Center for Environment and Energy Based on Nanomaterials Science, Furo-cho, Chikusa, Nagoya 464-8502, Japan
3. EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8502, Japan
4. Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya 456-8587, Japan
5. Department of Electrical and Electronic Engineering, Faculty of Science and Technology, Meijo University, 1-501 Shiogamaguchi, Tempaku, Nagoya 468-8502, Japan
6. Department of Electrical and Electronic Engineering, Faculty of Science and Technology, Kinki University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan
7. APCO Ltd., 522-10 Kitano-machi, Hachioji 192-0906, Japan
8. Department of Electrical and Electronic Engineering, Faculty of Engineering, Osaka Electro-Communication University, 18-8 Hatsu-cho, Neyagawa 572-8530, Japan