title: The effect of surface roughness on the plasmonic response of individual sub-micron gold spheres.
abstract: Nanoscale surface corrugation strongly determines the plasmonic response of gold nanoparticles with dimensions of several tens of nanometres. Scattering spectra of individual spheres with a rough surface were found to red-shift and broaden. The plasmon modes exhibited quadrupole damping, in contrast to particles with smooth surfaces. Additionally, rougher spheres display a higher SERS activity, which demonstrates the crucial role of nanoscale surface texturing on the plasmonic response of gold particles.
authors: Departamento de Química Física and Unidad Asociada CSIC-Universidade de Vigo, 36310 Vigo, Spain. jesica@uvigo.es
authors: Jessica
authors: J
authors: Rodríguez-Fernández
authors: Alison M
authors: AM
authors: Funston
authors: Jorge
authors: J
authors: Pérez-Juste
authors: Ramón A
authors: RA
authors: Alvarez-Puebla
authors: Luis M
authors: LM
authors: Liz-Marzán
authors: Paul
authors: P
authors: Mulvaney