1. PG & Research Department of Physics N.M.S.S.V.N. College Madurai India
2. UNESCO‐UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies University of South Africa (UNISA) Pretoria South Africa
3. Nanosciences African network (NANOAFNET), Materials Research Department (MRD) iThemba LABS‐National Research Foundation (NRF) Somerset West South Africa