1. I3N-Aveiro
2. Department of Physics
3. University of Aveiro
4. Aveiro-3810 193
5. Portugal
6. Materials Research Laboratory
7. Osmania University
8. Hyderabad-500 007
9. India
10. CICECO
11. IFIMUP and IN- Institute of Nanoscience and Nanotechnology
12. Laboratorio de Microscopias Avanzadas (LMA)
13. Instituto de Nanociencia de Aragon
14. Universidad de Zaragoza
15. Zaragoza
16. Spain
17. Center for Mechanical Technology & Automation-TEMA
18. 3810-193 Aveiro