1. Nano-materials Lab, Department of Chemistry, Birla Institute of Technology and Science, Pilani-K K Birla Goa Campus, Goa-403726, India
2. Department of Physics, Birla Institute of Technology and Science Pilani-Pilani Campus, Rajasthan-333031, India
3. Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
4. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India