1. Faculty of Science; Materials Science and Nanotechnology Program; Khon Kaen University; Khon Kaen 40002 Thailand
2. Department of Physics; Integrated Nanotechnology Research Center (INRC); Faculty of Science; Khon Kaen University; Khon Kaen 40002 Thailand
3. National Metal and Materials Technology Center (MTEC); Thailand Science Park Pathum Thani 12120 Thailand
4. Synchrotron Light Research Institute (Public Organization) 111 University Avenue Muang District Nakhon Ratchasima 30000 Thailand
5. School of Physics; Institute of Science; Suranaree University of Technology; Nakhon Ratchasima 30000 Thailand