1. Laboratory
for Surface Science and Technology, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
2. Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science & Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
3. Laboratory
for Interfaces, Soft matter and Assembly, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland