1. KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, SE-100 44 Stockholm, Sweden
2. Department of Chemistry − Ångström Laboratory, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden
3. AIMES−Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institute and KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
4. Department of Neuroscience, Karolinska Institute, SE-171 77 Stockholm, Sweden