1. Physics of Nanostructured Systems Department, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
2. Ioan Ursu Institute, Babeș-Bolyai University, Cluj-Napoca, Romania
3. Integrated Electron Microscopy Laboratory, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
4. Electron Microscopy Centre, Babeș-Bolyai University, Cluj-Napoca, Romania