1. Energy and Material Research Group, School of Engineering and Information Technology; Universiti Malaysia Sabah; UMS Road 88400 Kota Kinabalu Sabah Malaysia
2. School of Chemical Sciences; Universiti Sains Malaysia; 11800 Penang Malaysia
3. School of Dental Sciences, Health Campus; Universiti Sains Malaysia; 16150 Kubang Kerian Kelantan Malaysia
4. Energy, Vibration and Sound Research Group (e-VIBS), School of Science and Technology; Universiti Malaysia Sabah; 88400 Kota Kinabalu Sabah Malaysia