1. a School of Electrical Engineering, Institute of Engineering , Suranaree University of Technology , Nakhon Ratchasima , 30000 , Thailand
2. d Smart Materials and Intelligent System Research Unit , Suranaree University of Technology , Nakhon Ratchasima , 30000 , Thailand
3. b School of Ceramic Engineering, Institute of Engineering , Suranaree University of Technology , Nakhon Ratchasima , 30000 , Thailand
4. c School of Physics, Institute of Science , Suranaree University of Technology and NANOTECH-SUT Center of Excellence on Advanced Functional Nanomaterials , Nakhon Ratchasima , 30000 , Thailand