1. Department of Physics, UPES, Dehradun, India
2. Centre for Advanced Studies in Electronics Science and Technology (CASEST), School of Physics, University of Hyderabad, India
3. Centre for Nanotechnology, University of Hyderabad, Hyderabad, India
4. Technical Physics Division, Bhabha Atomic Research Centre, Mumbai, India
5. School of Engineering, University of Warwick, Coventry, UK
6. Centre for Interdisciplinary Research and Innovation, UPES, Dehradun, India