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Optical Extinction Spectroscopy of Oblate, Prolate and Ellipsoid Shaped Gold Nanoparticles: Experiments and Theory

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Abstract

Localized Surface Plasmons (LSP) on metallic nanoparticles of different shapes are investigated by extinction spectroscopy. Experimental results are compared to simulations by a Finite-Difference Time-Domain (FDTD) method. Three different shapes of nanoparticles are compared, oblates, prolates and ellipsoids, in terms of spectral tunability of the LSP resonance (LSPR). It is found that the complete geometry of the nanoparticle must be given to truly define the LSP resonance and that ellipsoids offer the widest spectral tunability.

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Authors and Affiliations

  1. Institut Charles Delaunay – Université de technologie de Troyes CNRS FRE 2848 – Laboratoire de Nanotechnologie et d’Instrumentation Optique, 12 rue Marie Curie, BP 2060, 10010, Troyes cedex, France

    Johan Grand, Pierre-Michel Adam, Anne-Sophie Grimault, Alexandre Vial, Marc Lamy de la Chapelle, Jean-Louis Bijeon, Sergei Kostcheev & Pascal Royer

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  1. Johan Grand
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  2. Pierre-Michel Adam
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  3. Anne-Sophie Grimault
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  4. Alexandre Vial
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  5. Marc Lamy de la Chapelle
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  6. Jean-Louis Bijeon
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  7. Sergei Kostcheev
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Correspondence to Jean-Louis Bijeon.

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Grand, J., Adam, PM., Grimault, AS. et al. Optical Extinction Spectroscopy of Oblate, Prolate and Ellipsoid Shaped Gold Nanoparticles: Experiments and Theory. Plasmonics 1, 135–140 (2006). https://doi.org/10.1007/s11468-006-9014-7

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  • DOI: https://doi.org/10.1007/s11468-006-9014-7

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