1. Center of Analysis and Testing
2. College of Material and Chemical Engineering
3. Henan University of Engineering
4. Xinzheng 451191
5. P. R. China
6. University Research Facility in Materials Characterization and Device Fabrication
7. The Hong Kong Polytechnic University
8. Hong Kong
9. Henan Key Laboratory of Rare Earth Functional Materials
10. Zhoukou Normal University
11. Zhoukou 466001
12. Henan Provincial People's Hospital
13. Zhengzhou University People's Hospital
14. Zhengzhou 450003
15. The College of Chemistry and Molecular Engineering
16. Zhengzhou University
17. Zhengzhou 450001