Institute of Micro and Nanomaterials, University of Ulm, Ulm 89081, Germany;
Institute of Micro and Nanomaterials, University of Ulm, Ulm 89081, Germany;
Institute for Biological Interfaces, Research Center Karlsruhe, Karlsruhe 76021, Germany;
Institute of Micro and Nanomaterials, University of Ulm, Ulm 89081, Germany;
Institute for Nanotechnology, Research Center Karlsruhe, Karlsruhe 76021, Germany;