1. Center of Super-Diamond and Advanced Films (COSDAF)
2. City University of Hong Kong
3. Kowloon
4. Hong Kong 999077
5. Department of Materials and Science Engineering
6. CAS Center of Excellence for Nanoscience
7. Key Laboratory of Nanosystem and Hierarchical Fabrication
8. National Center for Nanoscience and Technology
9. Beijing 100190
10. P. R. China