1. Theoretical Physics Research Group, Department of Physics, Faculty of Science and Technology, Airlangga University, Kampus C, Jl. Mulyorejo, Surabaya 60115, Indonesia
2. Visiting Professor at Dinõ Lab., Department of Applied Physics, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
3. Joining and Welding Research Institute, Osaka University, Ibaraki, Osaka 567-0047, Japan
4. Engineering Physics Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
5. Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia