1. Institut Lumière Matière, University of Lyon, UMR 5306 CNRS and Université Claude Bernard Lyon 1, Villeurbanne, France
2. Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wroclaw, Poland
3. Electron Microscopy Laboratory, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland