1. Department of Materials Science and Engineering, Institute for Surface Science and Corrosion, Faculty of Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstrasse 7, Erlangen 91058, Germany
2. Department of Physics, Biophysics Group, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 91, Erlangen 91052, Germany
3. Institute for Nanotechnology and Correlative Microscopy eV INAM, Fraunhofer Institute, Äußere Nürnberger Str. 62, Forchheim 91301, Germany
4. Department of Physics, Institute for Optics, Information and Photonics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, Erlangen 91058, Germany
5. Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Äußere Nürnberger Str. 62, Forchheim 91301, Germany
6. Max Planck Institute for the Science of Light, Staudtstr. 2, Erlangen 91058, Germany
7. Institute for Experimental Physics, Freie Universität Berlin, Arnimallee 14, Berlin 14195, Germany
8. Regional Centre of Advanced Technologies and Materials, Palacky University, Listopadu 50A, Olomouc 772 07, Czech Republic