Issue 28, 2009
From the journal:

Physical Chemistry Chemical Physics

The effect of surface roughness on the plasmonic response of individual sub-micron gold spheres†

Jessica Rodríguez-Fernández,*ab   Alison M. Funston,*b   Jorge Pérez-Juste,a   Ramón A. Álvarez-Puebla,a   Luis M. Liz-Marzána  and  Paul Mulvaneyb  

* Corresponding authors

a Departamento de Química Física and Unidad Asociada CSIC-Universidade de Vigo, 36310 Vigo, Spain
E-mail: jesica@uvigo.es
Fax: +34 9 8681 2556

b School of Chemistry & Bio21 Institute, University of Melbourne, Parkville, Australia
E-mail: afunston@unimelb.edu.au
Fax: +61 3 9348 1595

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.

Graphical abstract: The effect of surface roughness on the plasmonic response of individual sub-micron gold spheres

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Article information

DOI
https://doi.org/10.1039/B905200N
Article type
Paper
Submitted
13 Mar 2009
Accepted
08 Apr 2009
First published
15 May 2009

Phys. Chem. Chem. Phys., 2009,11, 5909-5914

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The effect of surface roughness on the plasmonic response of individual sub-micron gold spheres

J. Rodríguez-Fernández, A. M. Funston, J. Pérez-Juste, R. A. Álvarez-Puebla, L. M. Liz-Marzán and P. Mulvaney, Phys. Chem. Chem. Phys., 2009, 11, 5909 DOI: 10.1039/B905200N

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