1. Department of Science, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat 382007, India
2. Department of Physics, Indian Institute of Technology Guwahati, Assam 781039, India
3. Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
4. Department of Physics, National Institute of Technology Meghalaya, Shillong 793003, India