1. University of Vienna
2. Faculty of Physics
3. 1090 Wien
4. Austria
5. Tsinghua University
6. State Key Lab of New Ceramics and Fine Processing
7. School of Materials Science and Engineering
8. Beijing 100084
9. P. R. China
10. Tokyo Metropolitan University
11. Department of Physics
12. Tokyo 192-0397
13. Japan
14. National Institute of Advanced Industrial Science and Technology (AIST)
15. Nanomaterials Research Institute
16. Tsukuba 305-8565
17. Ulm University
18. Central Facility for Electron Microscopy
19. Electron Microscopy Group of Materials Science
20. Ulm 89081
21. Germany