1. Graphene Labs; Istituto Italiano di Tecnologia; via Morego, 30 16163 Genova Italy
2. Chemistry and Multifunctional Materials Lab, Technology and measurements Department; Thales Research and Technology; 91767 Palaiseau France
3. Materials Characterization Facility; Istituto Italiano di Tecnologia; via Morego, 30 16163 Genova Italy