1. Werkstoffe der Elektrotechnik and CENIDE, University of Duisburg-Essen, Duisburg 47057, Germany
2. Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Technion–Institute of Technology, Haifa 3200003, Israel
3. Department of Materials Science and Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel