1. National Centre for HREM, Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Lorentzweg 1, Delft, The Netherlands, Department of Chemistry, Princeton University, Princeton, New Jersey 08540, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk, Poland, and van der Waals-Zeeman Institute, University of Amsterdam, Amsterdam, The Netherlands