1. Instituto de Física de São Carlos
2. Universidade de São Paulo
3. CP 369
4. São Carlos
5. Brazil
6. Department of Materials Science and Engineering
7. Stanford University
8. Stanford
9. USA
10. Institute of Physical Chemistry
11. Westfal̈ische Wilhelms-Universitaẗ Münster
12. D-48149 Münster
13. Germany
14. Interdisciplinary Nanoscience Center
15. Aarhus University
16. Gustav Wieds Vej 14
17. DK-8000 Aarhus C
18. Denmark
19. Departments of Chemical Engineering
20. University of California
21. Santa Barbara
22. Materials Department