1. Program Studi Fisika, FMIPA, Universitas Negeri Jakarta, Jakarta Timur, Indonesia
2. Departemen Geoscience, FMIPA, Universitas Indonesia, Kampus Baru UI Depok, Indonesia
3. School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor Darul Ehsan, Malaysia
4. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia