1. Institute of Particle Technology Friedrich-Alexander Universität Erlangen-Nürnberg 91058 Erlangen Germany
2. Catalan Institute of Nanoscience and Nanotechnology (ICN2) CSIC & The Barcelona Institute of Science and Technology Bellaterra 08193 Barcelona Spain
3. Institute of Micro- and Nanostructure Research (IMN) Center for Nanoanalysis and Electron Microscopy (CENEM) IZNF, Friedrich-Alexander Universität Erlangen-Nürnberg 91058 Erlangen Germany
4. Institute for Multiscale Simulation IZNF, Friedrich-Alexander Universität Erlangen-Nürnberg 91058 Erlangen Germany
5. ICREA Pg. Lluis Companys 23 08010 Barcelona Spain