1. Institute of Nanotechnology; Karlsruhe Institute of Technology (KIT); 76128 Karlsruhe Germany
2. Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN); Karlsruhe Institute of Technology (KIT); 76128 Karlsruhe Germany
3. Preparative Macromolecular Chemistry; Institut für Technische Chemie und Polymerchemie; Karlsruhe Institute of Technology (KIT); 76128 Karlsruhe Germany
4. Institut für Biologische Grenzflächen; Karlsruhe Institut of Technology (KIT); 76344 Eggenstein-Leopoldshafen Germany