1. Institute of Materials Research, German Aerospace Center (DLR), 51147 Cologne, Germany
2. Department of Chemistry and Pharmacy, Friedrich - Alexander Universität, 91058 Erlangen, Germany
3. European Astronaut Centre, European Space Agency, Linder Hoehe, 51147 Cologne, Germany
4. Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
5. Faculty of Engineering, Institute of Technology for Nanostructures, University of Duisberg Essen, 47057, Germany