1. Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
2. Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS), Università di Genova, Via Opera Pia 13, 16145 Genova, Italy
3. Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, GR-711 10 Heraklion, Greece
4. Physical Chemistry Laboratory, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece