1Department of Physics, R.Y.M. Engineering College (VTU-RC), Ballari 583104, India
2Department of Physics, FMPS, MS Ramaiah University of Applied Sciences, Bengaluru 560054, India
3Department of Physics, Vidyavardhaka College of Engineering, Mysuru 570002, India
4National Assessment and Accreditation Council, Bengaluru 560072, India
5Honarory Professor, Jain University, Bengaluru 562112, India
6Distinguished Professor, Centre for Energy, Indian lnstitute of Technology, Guwahati 781039, India
7Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumkur 572103, India