1. Institute for Biological Interfaces (IBG-1), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
2. School of Engineering, University of Applied Sciences Upper Austria, 4600 Wels, Austria
3. Institute of Nanotechnology (INT) & Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
4. Institute for Automation and Applied Informatics (IAI), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
5. Institute of Imaging and Computer Vision, RWTH Aachen University, 52074 Aachen, Germany
6. Institute of Applied Physics (APH), Karlsruhe Institute of Technology (KIT), 76049 Karlsruhe, Germany
7. Institute of Biological and Chemical Systems (IBCS) and Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
8. Department of Physics, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States