1. Department of Material Science and Physical Chemistry; University of Barcelona; Barcelona 08028 Catalonia Spain
2. Institute for Bioengineering of Catalonia (IBEC); Barcelona 08028 Catalonia Spain
3. Centro Investigación Biomédica en Red (CIBER-BBN); Campus Río Ebro-Edificio I+D Poeta Mariano Esquillor s/n 50018 Zaragoza Spain
4. Centro de Física; Instituto Venezolano de Investigaciones Cientificas (IVIC); Apartado 21827 Caracas 1020A Venezuela
5. School of Physics Yachay Tech; Yachay City of Knowledge; 100119 Urcuqui Ecuador
6. Institute for Research in Biomedicine (IRB Barcelona); Barcelona Institute of Science and Technology (BIST); Baldiri Reixac 10 08028 Barcelona Spain
7. Arizona State University School of Molecular Sciences; Physical Sciences Center PSD-D102 and Biodesign Institute Center for Bioelectronics and Biosensors; Tempe AZ 85287 USA
8. Donostia International Physics Center (DIPC); Manuel Lardizabal Ibilbidea, 4 20018 Donostia Gipuzkoa Spain
9. Departament de Química Orgánica; Universitat de Barcelona; Barcelona 08028 Catalonia Spain