1. The Njord Centre, Department of Physics, University of Oslo, Oslo 0371, Norway
2. Institute of Applied Physics, Applied Interface Physics, Vienna University of Technology, Vienna 1040, Austria
3. PoreLab, The Njord Centre, Departments of Physics and Geosciences, University of Oslo, Oslo 0371, Norway
4. CEST Centre for Electrochemical Surface Technology GmbH, Wiener Neustadt 2700, Austria
5. Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Oslo 0315, Norway
6. Institute of Basic Medical Sciences, University of Oslo, Oslo 0317, Norway
7. Department of Materials Science and Engineering, Technion, Israel Institute of Technology, Haifa 32000, Israel