1. Department of Mechanical and Material Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Bandar Sungai Long, 43000 Kajang, Malaysia
2. Centre for Photonics and Advanced Materials Research (CPAMR), Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Bandar Sungai Long, 43000 Kajang, Malaysia
3. Faculty of Physics, Dong Thap University, Cao Lanh City, Dong Thap Province, Vietnam