1. Industrial Simulation, University of Applied Sciences, 3100 St. Pölten, Austria
2. Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
3. Laboratory for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
4. Institute of Physics, Chemnitz University of Technology, 09126 Chemnitz, Germany
5. Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
6. Centre for Integrated Sensor Systems, Danube University Krems, 2700 Wiener Neustadt, Austria