1. Helmholtz Institute Ulm (HIU) 89081 Ulm Germany
2. Karlsruhe Institute of Technology (KIT) 76021 Karlsruhe Germany
3. Institute for Technology Assessment and Systems Analysis (ITAS) Karlsruhe Institute of Technology (KIT) 76021 Karlsruhe Germany
4. University College London (UCL) Department of Chemistry London WC1H 0AJ United Kingdom
5. Central Facility for Electron Microscopy Ulm University 89081 Ulm Germany