Professor D. C. Kothari is a Professor of Physics and Chairman, Physics Department, University of Mumbai, India. He has had association with the Istituto per la Recerca Scientifica e Tecnologica, Trento, (Italy) and University of Trento as Guest Scientist (1988-1990) and Visiting Professor (1991-94). He has worked as General Manager (R&D) and Vice President (Technology) at Multi-arc India Ltd (1997-1999). He is co-author of over 75 refereed research papers in the field. His past contributions include: ion beam treatment on steels to improve wear and corrosion resistance, ion beam assisted deposition, ion beam mixing, PVD coatings, Pulsed Laser Deposition and Plasma Nitriding. Industrial scale process optimization and application engineering of various PVD coatings have been carried out under his supervision. He has led a team to develop an industrial scale Plasma Nitriding equipment. Present his research area is focussed on use of Nanotechnology for Energy devices.