1. Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, 15341 Agia Paraskevi
Attikis, Athens, Greece
2. Physics Department, School of Natural Sciences, University of Patras, 26504 Rio, Greece
3. Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
4. Department of Chemistry, Faculty of Science, Al-Azhar University, 11884 Cairo, Egypt
5. Department of Materials Science and Technology, University of Crete, Vassilika Voutes, 70013 Heraklion, Greece
6. Elettra-Sincrotrone Trieste S.C.p.A., ss 14, km 163,5, 34149 Basovizza, Trieste, Italy
7. Electrical and Computer Engineering Department, University of the Peloponnese, 26334 Patras, Greece