Prof. Dr. Kazunori Koga was born in Kumamoto, Japan, in 1970. He received a D.Sc. degree from Kyushu University, Fukuoka, Japan, in 1999. He was a Research Associate with Kyushu University from 1999 to 2009. He has been an Associate Professor of Electronics with Kyushu University since 2009. His current research interests include fine particle plasma, plasma processing, plasma bioapplication, and nonlinear phenomena in plasma.