1. Department of Chemistry
and Biochemistry, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
2. Research Center for
Electron Microscopy, Freie Universität Berlin, Fabeckstrasse 36a, 14195 Berlin, Germany
3. BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Straße
11, 12489 Berlin, Germany