1. Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, CIBER-BBN, Campus UAB, Bellaterra, Spain
2. Instituto de Microelectrónica de Barcelona (IMB-CNM, CSIC), Campus UAB, Bellaterra, Spain
3. Advanced NEMS Group, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland