1. National Centre for Nanoscience and Nanotechnology, University of MadrasGuindy CampusChennai600025India
2. Geetha Jeevan Arts and Science CollegeKurukkusalaiThoothukudi628722India
3. Applied Optics Laboratory, Department of PhysicsIndian Institute of Technology MadrasChennai600036India
4. Department of Nuclear PhysicsUniversity of MadrasGuindy CampusChennai600025India