Masaaki Okubo received the B.Eng., M.Eng., and Ph.D. degrees from the Department of Mechanical Engineering, Tokyo Institute of Technology, Tokyo, Japan, in 1985, 1987, and 1990, respectively. His current research interests are nonthermal plasma applications for air pollution control, material surface modification, and numerical simulations of plasmas, aerosols, and multiphase fluid flows in environmental engineering. Dr. Okubo is the author of more than 230 original and review papers in scientific journals and 33 books. Now, he was a chairman of Electrostatics Process Committee of the IEEE Industry Applications Society and the fellow of IEEE and Japan Society of Mechanical Engineers.