EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation

N. Geuquet; L. Henrard

doi:10.1016/j.ultramic.2010.01.013

EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation

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

Abstract

Surface plasmons of noble metal nanoparticles have recently been studied by Electron Energy-Loss Spectroscopy (EELS) performed in an electron microscope. We present here the basic formalism for EELS simulations in a Discrete Dipole Approximation (DDA) framework for such surface excitations. We compare EELS data and optical properties of a silver triangular nanoprism and show that the spatial variation of surface plasmon excitation probabilities allows to discriminate modes of similar energies. We also emphasize the importance of the substrate polarization effect to reliably describe experimental data. © 2010 Elsevier B.V.

Original language	English
Pages (from-to)	1075-1080
Number of pages	6
Journal	Ultramicroscopy
Volume	110
Issue number	8
DOIs	https://doi.org/10.1016/j.ultramic.2010.01.013
Publication status	Published - 1 Jul 2010

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10.1016/j.ultramic.2010.01.013

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title = "EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation",

abstract = "Surface plasmons of noble metal nanoparticles have recently been studied by Electron Energy-Loss Spectroscopy (EELS) performed in an electron microscope. We present here the basic formalism for EELS simulations in a Discrete Dipole Approximation (DDA) framework for such surface excitations. We compare EELS data and optical properties of a silver triangular nanoprism and show that the spatial variation of surface plasmon excitation probabilities allows to discriminate modes of similar energies. We also emphasize the importance of the substrate polarization effect to reliably describe experimental data. {\textcopyright} 2010 Elsevier B.V.",

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AU - Henrard, L.

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N2 - Surface plasmons of noble metal nanoparticles have recently been studied by Electron Energy-Loss Spectroscopy (EELS) performed in an electron microscope. We present here the basic formalism for EELS simulations in a Discrete Dipole Approximation (DDA) framework for such surface excitations. We compare EELS data and optical properties of a silver triangular nanoprism and show that the spatial variation of surface plasmon excitation probabilities allows to discriminate modes of similar energies. We also emphasize the importance of the substrate polarization effect to reliably describe experimental data. © 2010 Elsevier B.V.

AB - Surface plasmons of noble metal nanoparticles have recently been studied by Electron Energy-Loss Spectroscopy (EELS) performed in an electron microscope. We present here the basic formalism for EELS simulations in a Discrete Dipole Approximation (DDA) framework for such surface excitations. We compare EELS data and optical properties of a silver triangular nanoprism and show that the spatial variation of surface plasmon excitation probabilities allows to discriminate modes of similar energies. We also emphasize the importance of the substrate polarization effect to reliably describe experimental data. © 2010 Elsevier B.V.

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JO - Ultramicroscopy

JF - Ultramicroscopy

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EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation

Abstract

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Tuning the Plasmonic Response up: Hollow Cuboid Metal Nanostructures

Local plasmonic studies on individual core-shell gold-silver and pure gold nano-bipyramids

Morphological tunability of the plasmonic response: From hollow gold nanoparticles to gold nanorings

Recent Advances in Spectromicroscopy: Experimental and Theoretical Tools

Cite this

EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation

Abstract

Access to Document

Other files and links

Fingerprint

Research output

Tuning the Plasmonic Response up: Hollow Cuboid Metal Nanostructures

Local plasmonic studies on individual core-shell gold-silver and pure gold nano-bipyramids

Morphological tunability of the plasmonic response: From hollow gold nanoparticles to gold nanorings

Activities

Recent Advances in Spectro­microscopy: Experimental and Theoretical Tools

Cite this

Recent Advances in Spectromicroscopy: Experimental and Theoretical Tools