1. Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur – 603203, TN, India
2. Department of Medical Physics, Anna University, Chennai – 600 025, India
3. National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai – 600 025, India