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Low-Energy Ion Beam Synthesis as a New Route toward Plasmonic Nanostructures

Published online by Cambridge University Press:  31 January 2011

Robert Carles ,
Cosmin Farcau ,
Julien Campos ,
Caroline Bonafos ,
Gérard BenAssayag  and
Antoine Zwick
Robert Carles
Affiliation:
robert.carles@cemes.fr, CEMES, CNRS - Université Toulouse, Toulouse, France
Cosmin Farcau
Affiliation:
cosmin.farcau@cemes.fr, CEMES, CNRS - Université Toulouse, Toulouse, France
Julien Campos
Affiliation:
jcampos@laas.fr, LAAS, CNRS - Université Toulouse, Toulouse, France
Caroline Bonafos
Affiliation:
bonafos@cemes.fr, CEMES, CNRS - Université Toulouse, Toulouse, France
Gérard BenAssayag
Affiliation:
benassay@cemes.fr, CEMES, CNRS - Université Toulouse, Toulouse, France
Antoine Zwick
Affiliation:
antoine.zwick@cemes.fr, CEMES, CNRS - Université Toulouse, Toulouse, France
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Abstract

Single δ-layers of dispersed silver (Ag) nanoparticles are obtained by low-energy ion beam implantation in a silica thin film. TEM microscopy reveals that the obtained Ag particles are spherical, crystalline, and the particles layer is located at only few nanometers below the free silica surface. We use reflectivity measurements to probe the optical/plasmonic response of the fabricated structures and exploit plasmon resonance and optical interference effects in the silica film to record the Raman scattering by quadrupolar vibrations of the spherical particles.

Keywords

ion-implantationAgoptical

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