1. Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Kamphaengsaen, Nakhon Pathom, Thailand
2. Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna Tak, Muang, Tak, Thailand
3. Faculty of Science and Technology, Pibulsongkram Rajabhat University, Muang, Phitsanuloke, Thailand
4. Physics Program, Department of Science and Technology, Faculty of Liberal Arts and Science, Roi Et Rajabhat University, Selaphum, Thailand
5. Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Kamphaengsaen, Nakhon Pathom, Thailand