1. Program of Physics, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, Thailand
2. Department of Applied Physics, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima, Thailand
3. Advanced Materials Research Unit, Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand