1. Surface and Colloid Science Laboratory, Geological Studies Unit; Indian Statistical Institute; 203, B.T. Road Kolkata- 700 108 India
2. Department Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore- 560012 India
3. Department of Chemistry; University of North Bengal; Darjeeling- 734 013 India
4. Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai- 600036 India
5. Center for Surface Science, Department of Chemistry; Jadavpur University; Kolkata- 700032 India