1. Department of Biotechnology and Chemical Technology
2. Aalto University School of Chemical Technology
3. , Finland
4. Department of Applied Physics
5. Aalto University School of Science
6. A. M. Prokhorov General Physics Institute RAS
7. 119991 Moscow, Russia
8. Center for Electron Nanoscopy
9. Technical University of Denmark
10. DK-2800 Kongens Lyngby, Denmark