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

Jessica Rodriguez-Fernandez; Alison May Funston; Jorge Perez-Juste; Ramon A Alavarez-Puebla; Luis M Liz-Marzan; Paul Mulvaney

doi:10.1039/b905200n

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

Jessica Rodriguez-Fernandez, Alison May Funston, Jorge Perez-Juste, Ramon A Alavarez-Puebla, Luis M Liz-Marzan, Paul Mulvaney

Research output: Contribution to journal › Article › Research › peer-review

128 Citations (Scopus)

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.

Original language	English
Pages (from-to)	5909 - 5914
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	11
Issue number	28
DOIs	https://doi.org/10.1039/b905200n
Publication status	Published - 2009
Externally published	Yes

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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.",

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AU - Liz-Marzan, Luis M

AU - Mulvaney, Paul

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AB - 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.

UR - http://www.rsc.org.ezproxy.lib.monash.edu.au/ej/CP/2009/b905200n.pdf

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M3 - Article

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

Abstract

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