Honorary Visiting Professor, Nano Science and Synthetic Leaf Laboratory at Downing Hall, Centre for Healthcare Science and Technology, IIEST, Shibpur |
Honorary Distinguished
Professor, Nano Science and Synthetic Leaf Cell, Dept. of Chemistry, Industrial & Applied Chemistry, Ramakrishna Mission Vidyamandia, Belur Math |
Research Associate, (University College of Science, Calcutta), 1967-1969.
Lecturer in Chemistry, Surendranath College, (University of Calcutta), 1969-1970.
Lecturer in Chemistry, T.D. Post-Graduate College (University of Gorakhpur), 1970-1976.
Post-doctoral Research, (University of Dortmund, Germany), 1976-1977.
Post-doctoral Research, (University of Bielefeld, Germany), 1977-1978.
Lecturer in Chemistry, (Indian Institute of Technology-Kanpur), 1978-1980.
Visiting Scientist, Faculty of Chemistry, (University of Bielefeld, Germany),1981-1982.
Visiting Scientist, Charles F. Kettering Research Laboratory, Yellow Spring, Ohio, USA, ,May-July, 1984.
Assistant Professor of Chemistry, (Indian Institute of Technology-Kanpur),1981-1988.
Visiting Assistant Professor of Chemistry, (University of Charlottesville, Virginia), USA, 1988-1989.
Professor of Chemistry, Indian Institute of Technology-Kanpur, 1988- 2012.
Humboldt-Fellow , (University of Bielefeld, Germany),Dec.1998- Feb.1999.
Visiting Professor, (Tata Institute of Fundamental Research, Mumbai),May-July, 2000.
Visiting Professor, (University of Karlsruhe, Germany),June-July, 2002.
Chair, Department of Chemistry, (Indian Institute of Technology, Kanpur), January,2001-December,2004.
Member, Board of Directors, Cromoz Inc, .Raleigh, NC 27617, USA,September, 2004-contd.
Re-invited by (Alexander von Humboldt Foundation, Germany), June-July, 2006.
Visiting Professor , (Central University Hyderabad, India),January,2007.
Honorary Emeritus Professor, Department of Chemistry, (Indian Institute of Engineering Science and Technology, Shibpur), 2012- 2015.
Honorary Visiting Professor, Center for Healthcare Science and Technology, IIEST, Shibpur, 2016 - Cont.