1. Kansei Fukushi Research Institute, Tohoku Fukushi University, Sendai 989-3201, Japan
2. Industrial Technology Institute, Miyagi Prefectural Government, Sendai 981-3206, Japan
3. Advanced Institute for Materials Research (AIMR), Tohoku University, Sendai 980-8577, Japan
4. Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
5. Graduate School of Dentistry, Tohoku University, Sendai 980-8575, Japan