Kazunori Koga received D. Sc. degree in 1994 and 1999 from the Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Japan. He was worked as Research Associate from 1999 to 2007, an Assistant Professor from 2007 to 2009 in Faculty of Information Science and Electrical Engineering, Kyushu University, Japan. He was working as Associate Professor in Faculty of Information Science and Electrical Engineering, Kyushu University from 2009 to 2018. Since 2018 till now, he is working as Professor in Faculty of Information Science and Electrical Engineering, Kyushu University, He is carrying out emerging researches in the field of plasma agriculture. He found that three minutes plasma irradiation to plant seeds resulted in growth acceleration in all the growth stages as well as improving crop yields. The results can contribute issue of food crisis in the world. The excellent achievement was selected as a press release of AVS 62nd meeting and articles of IEEE Spectrum magazine, the homepage of German Physical Society and the Bulletin of the Japan Society of Applied Physics. He also established the innovative plasma nano-process that helps in understanding the nature of interaction between plasmas and nanostructures. He realized an ultra-precise deposition of a-Si:H films that can control composition ratio of Si-H and Si-H2 bonds in films. This leads to a breakthrough of a 20 years-unsolved issue of a-Si:H films.