1. Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
2. Micro Nano Bio-Fluidics Group, Indian Institute of Technology Madras, Chennai 600036, India
3. 2D Materials Research and Innovation Group, Indian Institute of Technology Madras, Chennai 600036, India
4. Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Kanakapura, Bangalore 562112, Karnataka, India