1. National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy Campus, Chennai, 600 025, India
2. Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, TN 603203, India
3. Department of Oral Pathology, Saveetha Dental College and Hospital, Chennai, 600 077, India