Prof. Wiwut Tanthapanichakoon the first NANOTEC Executive Director from 2003 -2007 visited NANOTEC on Aug 10. He is currently a Professor at Tokyo Institute of Technology (Tokyo Tech) in Japan. He was in town on a personal visit and attended the Professor Talk by Prof. Hideto Yoshida of Hiroshima University on “Recent Particles Classification Technology in Wet Process by Electrical Potential” at NANOTEC.