1. ETH Zurich; Department of Biosystems Science and Engineering; Mattenstrasse 26 4058 Basel BS Switzerland
2. Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter - Str 11 12489 Berlin Germany
3. Max Planck Institute for Biophysical Chemistry; Am Fassberg 11 37077 Göttingen Germany
4. Department of Electrical Engineering and Information Technology; Technische Universität Darmstadt; Merckstrasse 25 64283 Darmstadt Germany
5. Department of Chemistry; Center for NanoScience (CeNS); University of Munich (LMU); 81377 Munich Germany
6. BCMaterials; Basque Center for Materials; UPV/EHU Science Park 48940 Leioa Spain