1. Department of Applied Physics, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima, Thailand
2. Smart Materials Research Unit, Rajamangala University of Technology Thanyaburi, Pathumthani, Thailand
3. Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathumthani, Thailand