1. Physikalisches Institut
2. Westfälische Wilhelms-Universität
3. 48149 Münster
4. Germany
5. Center for Nanotechnology
6. School of Chemistry
7. Trinity College Dublin
8. The University of Dublin
9. Dublin 2
10. Ireland
11. Institute of Physics
12. University of Chinese Academy of Sciences
13. Chinese Academy of Sciences
14. Beijing 100190
15. P. R. China