Affiliation: | a Department of Materials Science and Technology, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho, Hirosaki 036-8561, Japan b Department of Electrical Engineering, Nara National College of Technology, Yamatokoriyama, Nara 639-1080, Japan c Asahi Glass Co., Ltd., Yurakucho, Chiyoda-ku, Tokyo 100-8405, Japan d Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8501, Japan |