1. Unit of Materials Science and Environmental Engineering, Tampere University, Tampere, Finland.
2. Université de Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR 5510, Villeurbanne, France.
3. Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milano, Italy.
4. Computational Physics Laboratory, Tampere University, Tampere, Finland.
5. Tampere Microscopy Center, Tampere University, Tampere, Finland.
6. Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria.
7. Bruker Nano Surfaces, Bruker Inc., Eden Prairie, MN, USA.
8. Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway.