1. 2D Materials Research and Innovation Group, Micro Nano and Bio-Fluidics Group, Quantum Centers in Diamond and Emerging Materials (QuCenDiEM) Group, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
2. Quantum Centers in Diamond and Emerging Materials (QuCenDiEM) Group, Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
3. 2D Materials Research and Innovation Group, Micro Nano and Bio-Fluidics Group, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
4. Quantum Centers in Diamond and Emerging Materials (QuCenDiEM) Group, Departments of Physics and Electrical Engineering, Indian Institute of Technology Madras, Chennai 600036, India