1. Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia
2. Research Center for Physics, Indonesian Institute of Sciences (LIPI), Bld. 440-442 Kawasan Puspiptek, Serpong, South Tangerang 15314, Indonesia
3. Research Center for Chemistry, Indonesian Institute of Sciences (LIPI), Bld. 452 Kawasan Puspiptek, Serpong, South Tangerang 15314, Indonesia