1. School of Applied Physics; Faculty of Science and Technology; Universiti Kebangsaan Malaysia; 43600 UKM Bangi Selangor Malaysia
2. Engineering Materials Department; Carbon Research Technology Research Group, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka; Hang Tuah Jaya, 76100 Durian Tunggal Melaka Malaysia
3. Composites and Polymer Blends Group; Radiation Processing Technology Division, Malaysian Nuclear Agency; Bangi 43000 Kajang Malaysia