1. Micro and Nano Materials Laboratory, Department of Chemistry, Faculty of Engg & Technology (ITER), Siksha ‘O’Anusandhan (Deemed to be University), Khandagiri Square, Bhubaneswar, Odisha-751030, India
2. Department of physics, Faculty of Engg & Technology (ITER), Siksha ‘O’Anusandhan (Deemed to be University), Khandagiri Square, Bhubaneswar, Odisha-751030, India
3. Central Institute of Technology, Kokrajhar (Deemed to be University, MHRD, Govt. of India), BTAD, Assam-783370, India