Yasuo Koide received his Ph.D. degree from Nagoya University in 1988. After he became an assistant professor at Nagoya University and an associate professor at Kyoto University, in 2002 he moved to National Institute for Materials Science (NIMS), Japan. Now he is a group leader of Wide Bandgap Materials Group, a platform director of the Nanofabrication Platform, and a division director of Research Network and Facility Services Division. He has more than 300 publications including technical articles, invited reviews, monographs, and books in semiconductor materials and devices. His research interest is diamond electronic devices and interface physics.