1. Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
2. Department of Physics, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
3. Biophysics Group, Physics Department, Ain Shams University, Cairo 11566, Egypt
4. Biomedical Electron Microscopy Facility, University of Liverpool, Liverpool L69 7ZB, United Kingdom
5. Surface Science Research Centre, Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom