1. Department of Microsystems Engineering, University of Freiburg, Georges-Köhler-Allee 201, 79110, Freiburg, Germany
2. Brainlinks-Braintools Center, Georges-Köhler-Allee 201, 79110, Freiburg, Germany
3. Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg, Albertstr. 19, 79104, Freiburg, Germany
4. Division of Nursing and Medical Technology, Luleå University of Technology, 971 87, Luleå, Sweden
5. Department of Microtechnology and Nanoscience, Chalmers University of Technology, Kemivägen 9, 412 58, Gothenburg, Sweden