1. CAS Key Laboratory of Standardization and Measurement for Nanotechnology
2. CAS Center for Excellence in Nanoscience
3. National Center for Nanoscience and Technology (NCNST)
4. Beijing 100190
5. China
6. Department of Chemistry
7. School of Science
8. Beijing Jiaotong University
9. Beijing 100044
10. School of Materials and Chemical Engineering
11. Ningbo University of Technology
12. Ningbo 315211