1. Department of Physics Rajiv Gandhi University of Knowledge Technologies (AP-IIIT) Srikakulam A.P. 532402 India
2. Department of Physics School of Science GITAM (Deemed to be University) Visakhapatnam A.P. 530045 India
3. Department of Engineering Physics A.U. College of Engineering (A) Andhra University Visakhapatnam A.P. 530003 India
4. Department of Chemistry Rajiv Gandhi University of Knowledge Technologies (AP-IIIT) Srikakulam A.P. 532402 India
5. UGC-DAE Consortium for Scientific Research Mumbai Center BARC Mumbai 400085 India