1. Division of Physics, School of Science, Walailak University, Nakhon Si Thammarat, Thailand
2. Functional Materials and Nanotechnology Center of Excellence, Walailak University, Nakhon Si Thammarat, Thailand
3. Division of Computer Engineering and Electronics, School of Engineering and Technology, Walailak University, Nakhon Si Thammarat, Thailand
4. Department of Art, Design, and Art History, California State University, Fresno, CA, USA