1. Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
2. Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
3. KIT−TUD Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt (TUD), 64287 Darmstadt, Germany