1. Universiti Malaysia Perlis (UniMAP), Center of Excellence Geopolymer & Green Technology (CEGeoGTech) 02600, Arau, Perlis, Malaysia
2. Universiti Sains Malaysia, School of Materials and Mineral Resources Engineering, Advanced Soldering Materials Group, 14300 Nibong Tebal, Penang, Malaysia
3. Częstochowa University of Technology, Faculty of Production Engineering and Materials Technology, Department of Physics, 19 Armii Krajowej Av., 42-200 Częstochowa, Poland
4. Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Department of Technology and Automation, l9c Armii Krajowej Av., 42-200 Czestochowa, Poland