1. Department of Basic and Applied Science for Engineering, SAPIENZA University of Rome, 00161 Rome, Italy
2. Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec City G1V0A6, Canada
3. Fraunhofer Institute for Applied Optics and Precision Engineering IOF, 07745 Jena, Germany
4. Institute of Applied Physics “Nello Carrara” (IFAC), National Research Council of Italy (CNR), Sesto Fiorentino, 50019 Firenze, Italy