Prof. O. N. Srivastava Sir was not only my Ph. D. Supervisor and academic father but true mentor of my personal life. I would say dedication meaning I realized truly by seeing Sir's activities in his chamber and our laboratory. Sir's approach towards his learning and tracking the things and resolving capacity of any new problem was amazing. No one in my life (except in text book) I found working so passionately for the research and development work parallel to him. He would always be an ideal for the leadership qualities he showed in handling instruments of the Hydrogen Energy Center, Nanoscience unit and Department of Physics, Institute of Science, BHU, Varanasi. His devoting time for his professional and personal life was endless debate in terms of adopting such routine like him in our daily life.
-Anant Prakash Pandey