1. Institute of Nanoscience and Nanotechnology
2. National Center for Scientific Research Demokritos
3. Attiki
4. Greece
5. Department of Physics
6. Department of Chemical Engineering
7. University of Patras
8. 26500 Patras
9. Physics Department
10. Solid State Physics Section
11. University of Athens
12. Athens
13. Department of Natural Sciences
14. University of Chester
15. Chester
16. UK
17. Materials Research Institute
18. School of Engineering and Materials
19. Queen Mary University of London
20. 26504 Patras