1. Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
2. Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
3. Department of Information Engineering, University of Pisa, I-56122 Pisa, Italy
4. Engineering Department, University of Messina, I-98166 Messina, Italy
5. Quantavis s.r.l., Largo Padre Renzo Spadoni snc, I-56123 Pisa, Italy
6. Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland