1. Department of Chemistry; North-Eastern Hill University; NEHU Campus; Shillong - 793022 India
2. Solid State Physics Division; Bhabha Atomic Research Center, Trombay; Mumbai - 400085 India
3. Microbiology Laboratory; Department of Biotechnology and Bioinformatics; North-Eastern Hill University; Shillong - 793022 India
4. Laboratory for Neutron Scattering; Paul Scherrer Institut; CH-5232 PSI Villigen Switzerland