1. Laboratory of Biocompatible Polymers, Department of “Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche” (STEBICEF), University of Palermo, Via Archirafi, 32, 90123 Palermo, Italy
2. Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, Via del Vespro 129, 90123 Palermo, Italy
3. Department of Physics and Chemistry “Emilio Segrè”, University of Palermo, Viale delle Scienze Ed. 18, 90128 Palermo, Italy
4. National Institute for Nuclear Physics (INFN), Catania Division, Via Santa Sofia 64, 95123 Catania, Italy
5. Advanced Technology Environment Network Center, Viale Delle Scienze Ed. 18, 90128 Palermo, Italy