1. Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
2. Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brazil
3. School of Physics and Optometric & Clinical Sciences, Technological University Dublin, Grangegorman, D07 XT95, Ireland