1. Advanced Functional Materials Research Group, Faculty of Industrial Technology, Bandung Institute of Technology, Bandung 40132, West Java, Indonesia
2. Research Centre for Nanosciences and Nanotechnology, Bandung Institute of Technology, Bandung 40132, West Java, Indonesia
3. Material Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
4. School of Information Science, Japan Advanced Institute of Science and Technology, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan