1. MicroNano Lab, Department of Electrical Engineering, Information Technology University of the Punjab (ITU), 54000 Lahore, Pakistan
2. Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Republic of Singapore
3. MLab, STI Unit, The Abdus Salam International Centre for Theoretical Physics, Trieste, 34151, Italy