1. CICECO – Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
2. INL – International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
3. Federal University of Santa Catarina, Florianópolis, 88040-900 Santa Catarina, Brazil
4. Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal