He received his Ph.D. (2000) in Applied Chemistry from Osaka University, Japan, and obtained M.S. (1997) and B.S. (1995) degrees in Material Science from Osaka Prefecture University, Japan. Tadachika joined the Institute of Scientific and Industrial Research (ISIR), Osaka University as Assistant Professor from 2000-2005. Tadachika was an Assistant Professor and then Associate Professor in the Department of Electrical, Electronics and Information Engineering and Department of Science of Technology Innovation at the NUT from 2005-2016. Tadachika was a JSPS Fellow at the Department of Physics at the University of York, UK in 2010.