1. Empa, Swiss Federal Laboratories for Materials Science and Technology
2. 9014 St. Gallen
3. Switzerland
4. 8600 Dübendorf
5. Laboratory of Nanostructures and Nanomaterials
6. Institute of Physics AS CR
7. 162 00 Prague 6
8. Czech Republic
9. Department of Chemistry
10. University of Basel
11. 4056 Basel