1. a Department of Innovative and Engineered Materials , Tokyo Institute of Technology , 4259 Nagatsuta-cho, Midori-ku, Yokohama , 226-8502 , Japan
2. b Department of Electrical Engineering and Electronics , Aoyama Gakuin University , 6-16-1 Chitosedai, Setagaya-ku, Tokyo , 157-8572 , Japan
3. c TOYO Corporation , 1-6, Yaesu 1-chome, Chuo-ku, Tokyo , 103-8284 , Japan
4. d Analytical Division, Philips Japan, Ltd. , 35-1, Sagamiohno 7-chome, Sagamihara-shi, Kanagawa , 228-8505 , Japan
5. e Department of Innovative and Engineered Materials , Tokyo Institute of Technology , 4259 Nagatsuta-cho, Midori-ku, Yokohama , 226-8502 , Japan E-mail: