He received his PhD in 1995 from Waseda University in Japan. Since 1991, he has joined as a faculty member of the Physics Department of Yokohama City University (YCU) in Japan. In 1998 and 1999, he also joined as a postdoctoral fellow of the Physics Department of the University of Kentucky and Pennsylvania State University in USA. Since 2006, he has served as a Professor of the YCU. Currently, he is a Dean of Graduate School of Nanobioscience of the YCU.
He has studied on the synthesis and novel physical properties of various molecular crystals such as organic semiconductors, protein crystals, and nanocarbon materials. Especially he has carried out pioneer researches on novel nanocarbon materials such as “carbon nanowalls” and “fullerene nanowhiskers”. His current interests on nanocarbon materials are directed to their applications to energy devices such as lithium ion battery and fuel cell.