1. Institute of Research and Development
2. Duy Tan University
3. Da Nang 550000
4. Vietnam
5. Division of Advanced Materials Engineering
6. Research Center of Advanced Materials Development
7. Jeonbuk National University
8. Jeonju 54896
9. Republic of Korea
10. Department of Optical Engineering
11. Kongju National University
12. Cheonan 31080
13. Department of Materials Science and Engineering
14. Korea University
15. Seoul 02841