1. School of Engineering and Physical Sciences, Heriot-Watt University Malaysia, Putrajaya, Federal Territory of Malaysia
2. Heriot-Watt Global College, Heriot-Watt University Malaysia, Putrajaya, Federal Territory of Malaysia
3. Sunway Centre for Electrochemical Energy and Sustainable Technology (SCEEST), School of Engineering and Technology, Sunway University, Kuala Lumpur, Malaysia
4. Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
5. Graduate School of Natural Science and Technology, Faculty of Engineering, Okayama University, Tsushimanaka, Kita Ward, Okayama, Japan