1. Department of Physics, National Institute of Technology Srinagar , Srinagar , Jammu and Kashmir – 190006 , India
2. Department of Physics, University of the Free State , P.O. Box 339 , Bloemfontein ZA9300 , South Africa
3. Smart Materials, NanoSYD, Mads Clausen Institute, University of Southern Denmark , Alsion 2 , Sønderborg , 6400 , Denmark
4. Department of Electrical and Computer Engineering, University of Texas at Austin , Austin , Texas 78751 , USA
5. Institute of Forensic Science & Criminology, Panjab University , Chandigarh , 160014 , India
6. Department of Mechanical Engineering, National Institute of Technology Srinagar , Srinagar , Jammu and Kashmir – 190006 , India