1. Faculty of Physics
2. University of Vienna
3. 1090 Vienna
4. Austria
5. Institute of Physics for Advanced Materials
6. Nanotechnology and Photonics (IFIMUP)/Departamento de Física e Astronomia
7. Universidade do Porto
8. 4169-007 Porto
9. Portugal
10. Adam Mickiewicz University in Poznań
11. 61-614 Poznań
12. Poland
13. Institute of Molecular Physics
14. Institute of Physics
15. Goethe University
16. 60438 Frankfurt am Main
17. Germany
18. Division de Fisica de Materiales
19. Depto. Polimeros y Materiales Avanzados: Fisica
20. Quimica y Tecnologia
21. Universidad del Pais Vasco
22. UPV/EHU