1. Key Laboratory of Interface Science and Engineering in Advanced Materials
2. Ministry of Education
3. Taiyuan University of Technology
4. Taiyuan 030024
5. China
6. Department of Materials Science and Engineering
7. College of Engineering
8. Peking University
9. Beijing 100871
10. Ohio State University
11. Columbus
12. USA
13. Department of Electrical Engineering and Computer Science
14. the University of Tennessee
15. Knoxville
16. Materials Science and Technology Division