1. Laboratory of Molecular Materials Division of Biophysics and Bioengineering Department of Physics, Chemistry and Biology Linköping University Linköping 581 83 Sweden
2. Division of Micro and Nanosystems KTH Royal Institute of Technology Stockholm 100 44 Sweden
3. Nuffield Department of Clinical Neurosciences John Radcliffe Hospital West Wing University of Oxford Oxford OX3 9DU UK
4. Institute of Microtechnology Center of Pharmaceutical Engineering Technische Universität Braunschweig Braunschweig 38106 Germany
5. AIMES, Center for Integrated Medical and Engineering Science Department of Neuroscience Karolinska Institute Solna 171 65 Sweden
6. Division of Nanobiotechnology Department of Protein Science, Science for Life Laboratory KTH Royal Institute of Technology Stockholm 17165 Sweden