1. Department of Materials and
Production Engineering, University of Naples Federico II, p.le Tecchio 80, 80125 Naples, Italy
2. Department of Chemistry, NANOMATES
and INSTM Research Unit, University of Salerno, via Ponte Don Melillo, 84084 Fisciano (SA), Italy
3. Department of Materials and Production
Engineering and INSTM Research Unit, University of Naples Federico II, p.le Tecchio 80, 80125 Naples, Italy