1. Laboratory of Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zurich), Wolfgang-Pauli Str. 10, CH-8093 Zurich, Switzerland
2. SuSoS AG, Lagerstrasse 14, CH-8600 Dübendorf, Switzerland
3. Chemical Synthesis Laboratory, SB-ISIC-LSYNC, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland