1. Department of Precision Engineering, Graduate School of Engineering, Osaka University, 565-0871 Osaka, Japan
2. Research Center for Quantum Engineering Design, Faculty of Science and Technology, Universitas Airlangga, 60115 Surabaya, Indonesia
3. Department of Physics, Faculty of Science and Technology, Universitas Airlangga, 60115 Surabaya, Indonesia
4. Research Center for Materials Informatics, Faculty of Computer Science, Universitas Dian Nuswantoro, 50131 Semarang, Indonesia
5. Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
6. Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Selangor, Malaysia
7. Advanced Functional Materials Research Group, Institut Teknologi Bandung, 40132 Bandung, Indonesia