Prof. Okamoto received his Ph.D. degree in Chemistry from Kyoto University, Kyoto, Japan, in 1998. From 1998 to 2000, he was a researcher at the Venture Business Laboratory of Kyoto University and from 2000 to 2002, he was a Research Fellow of the Japan Society for the Promotion of Science (JSPS). He then worked as a Postdoctoral Scholar of Electrical Engineering at the California Institute of Technology from 2001 to 2005, where he was a Senior Research Fellow of Physics from 2005 to 2007. From 2007 to 2011, he was a Research Associate Professor of Electronic Science and Engineering at Kyoto University, and from 2011 to 2018, he was an Associate Professor at the Institute for Materials Chemistry and Engineering at Kyushu University. Since 2018, he has been a Professor in the Department of Physics and Electronics at Osaka Prefecture University, which changed its name to Osaka Metropolitan University in April 2022 due to university integration. His current research interests include developing new optical materials and devices based on nanophotonics and plasmonics.