1. School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
2. Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, 15310 Athens, Greece
3. School of Physics, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland
4. AMBER Research Centre, Naughton Institute, Trinity College Dublin, Dublin 2, D02PN40, Ireland
5. Advanced Microscopy Laboratory, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland