1. Department of Physics
2. Interdepartmental Centre NIS
3. University of Torino
4. I-10125 Torino
5. Italy
6. Department of Chemistry
7. Interdepartmental Centre NIS and INSTM Centro di Riferimento
8. University of Rennes
9. CNRS
10. ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226
11. F-35000 Rennes
12. France
13. Nanofacility Piemonte INRiM (Istituto Nazionale di Ricerca Metrologica)
14. Torino