1. Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi , 126 Pracha Uthit Rd., Bang Mod, Thung Khru , Bangkok , 10140 , Thailand
2. Department of Material and Process Engineering Technology, Faculty of Engineering and Technology, King Mongkut’s University of Technology North Bangkok, Rayong Campus , Rayong , 21120 , Thailand