1. Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, Thailand
2. Program of Physics, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, Thailand
3. Integrated Nanotechnology Research Center, Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
4. Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham, Thailand
5. Research Center for Academic Excellence in Applied Physics, Faculty of Science, Naresuan University, Phitsanulok, Thailand