1. Advanced Materials Group, Materials Sciences and Technology Division, CSIR−North East Institute of Science and Technology, Jorhat 785006, Assam, India
2. Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat 785006, India
3. Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520, IEMN, F-59000 Lille, France