1. Department of Biomedical Engineering, SRM Institute of Science & Technology, Kattankulathur, Tamilnadu 603203, India
2. Department of Physics and Nanotechnology, SRM Institute of Science & Technology, Kattankulathur, Tamilnadu 603203, India
3. Laboratory for Sensors, Energy and Electronic Devices (Lab SEED), SRM Research Institute, SRM Institute of Science & Technology, Kattankulathur, Tamilnadu 603203, India