An eigenvector–expansion method for localized plasmon modes: Application to extinction and electron energy loss spectra of isolated and coupled metallic nanoparticles

Stéphane Olivier Guillaume, F. Javier García de Abajo, Luc Henrard

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The dominant features in the UV/visible spectra of metallic nanoparticles are governed by collective oscillations of valence electrons. These resonances are called localized surface plasmon (LSP) and have positions, widths and intensities that depends strongly on the nanoparticle’s geometry and environment but also on the nature of the probing excitation. When one is interested in coupled nanoparticles, the plasmon modes of these systems can be described with an hybridization scheme (Prodan et al. Science 302(5644):419–422, 2003). With help of this approach, modes can be classified in “bright” or “dark” mode according to whether they have a net dipole moment. In the last case, the mode cannot be excited with traditional optical excitation but one has to use a focused beam of fast electrons having electric field with low spatial extension that allows local stimulation (Nelayah et al. Nat Phys 3:348–353, 2007). Here, we are interested in the simulation of the extinction and electron energy loss (EEL) spectra of isolated and coupled metallic particles. To achieve this, we have developed a new approach based on the Discrete- Dipole Approximation (DDA) (Draine, Astrophys J 333:848–872, 1988; Geuquet and Henrard, Ultramicroscopy 110:1075–1080, 2010) that uses eigenvectors of the particle’s propagator to make a truncated basis for physical quantities (Guillaume et al. Phys Rev B 88(245439), 2013). The response of the cluster of particles is then obtained by adding interaction terms which account for multiple scattering between the particles.

langue originaleAnglais
Pages (de - à)501-502
Nombre de pages2
journalNATO Science for Peace and Security Series B: Physics and Biophysics
Volume68
Les DOIs
étatPublié - 1 janv. 2015

Empreinte digitale

Metal Nanoparticles
Energy dissipation
extinction
energy dissipation
Electrons
electron energy
Nanoparticles
nanoparticles
Photoexcitation
Multiple scattering
Dipole moment
Eigenvalues and eigenfunctions
energy
visible spectrum
stimulation
Electric fields
excitation
eigenvectors
dipole moments
electrons

Citer ceci

@article{620752e290ea494c8163c8068bafb588,
title = "An eigenvector–expansion method for localized plasmon modes: Application to extinction and electron energy loss spectra of isolated and coupled metallic nanoparticles",
abstract = "The dominant features in the UV/visible spectra of metallic nanoparticles are governed by collective oscillations of valence electrons. These resonances are called localized surface plasmon (LSP) and have positions, widths and intensities that depends strongly on the nanoparticle’s geometry and environment but also on the nature of the probing excitation. When one is interested in coupled nanoparticles, the plasmon modes of these systems can be described with an hybridization scheme (Prodan et al. Science 302(5644):419–422, 2003). With help of this approach, modes can be classified in “bright” or “dark” mode according to whether they have a net dipole moment. In the last case, the mode cannot be excited with traditional optical excitation but one has to use a focused beam of fast electrons having electric field with low spatial extension that allows local stimulation (Nelayah et al. Nat Phys 3:348–353, 2007). Here, we are interested in the simulation of the extinction and electron energy loss (EEL) spectra of isolated and coupled metallic particles. To achieve this, we have developed a new approach based on the Discrete- Dipole Approximation (DDA) (Draine, Astrophys J 333:848–872, 1988; Geuquet and Henrard, Ultramicroscopy 110:1075–1080, 2010) that uses eigenvectors of the particle’s propagator to make a truncated basis for physical quantities (Guillaume et al. Phys Rev B 88(245439), 2013). The response of the cluster of particles is then obtained by adding interaction terms which account for multiple scattering between the particles.",
keywords = "Coupling, Discrete-dipole approximation, Electron energy-loss spectroscopy, Hybridization, Localized plasmon, Metallic nanoparticle, Optical extinction",
author = "Guillaume, {St{\'e}phane Olivier} and {Garc{\'i}a de Abajo}, {F. Javier} and Luc Henrard",
year = "2015",
month = "1",
day = "1",
doi = "10.1007/978-94-017-9133-5__44",
language = "English",
volume = "68",
pages = "501--502",
journal = "NATO Science for Peace and Security Series B: Physics and Biophysics",
issn = "1874-6500",
publisher = "Springer Verlag",

}

TY - JOUR

T1 - An eigenvector–expansion method for localized plasmon modes: Application to extinction and electron energy loss spectra of isolated and coupled metallic nanoparticles

AU - Guillaume, Stéphane Olivier

AU - García de Abajo, F. Javier

AU - Henrard, Luc

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The dominant features in the UV/visible spectra of metallic nanoparticles are governed by collective oscillations of valence electrons. These resonances are called localized surface plasmon (LSP) and have positions, widths and intensities that depends strongly on the nanoparticle’s geometry and environment but also on the nature of the probing excitation. When one is interested in coupled nanoparticles, the plasmon modes of these systems can be described with an hybridization scheme (Prodan et al. Science 302(5644):419–422, 2003). With help of this approach, modes can be classified in “bright” or “dark” mode according to whether they have a net dipole moment. In the last case, the mode cannot be excited with traditional optical excitation but one has to use a focused beam of fast electrons having electric field with low spatial extension that allows local stimulation (Nelayah et al. Nat Phys 3:348–353, 2007). Here, we are interested in the simulation of the extinction and electron energy loss (EEL) spectra of isolated and coupled metallic particles. To achieve this, we have developed a new approach based on the Discrete- Dipole Approximation (DDA) (Draine, Astrophys J 333:848–872, 1988; Geuquet and Henrard, Ultramicroscopy 110:1075–1080, 2010) that uses eigenvectors of the particle’s propagator to make a truncated basis for physical quantities (Guillaume et al. Phys Rev B 88(245439), 2013). The response of the cluster of particles is then obtained by adding interaction terms which account for multiple scattering between the particles.

AB - The dominant features in the UV/visible spectra of metallic nanoparticles are governed by collective oscillations of valence electrons. These resonances are called localized surface plasmon (LSP) and have positions, widths and intensities that depends strongly on the nanoparticle’s geometry and environment but also on the nature of the probing excitation. When one is interested in coupled nanoparticles, the plasmon modes of these systems can be described with an hybridization scheme (Prodan et al. Science 302(5644):419–422, 2003). With help of this approach, modes can be classified in “bright” or “dark” mode according to whether they have a net dipole moment. In the last case, the mode cannot be excited with traditional optical excitation but one has to use a focused beam of fast electrons having electric field with low spatial extension that allows local stimulation (Nelayah et al. Nat Phys 3:348–353, 2007). Here, we are interested in the simulation of the extinction and electron energy loss (EEL) spectra of isolated and coupled metallic particles. To achieve this, we have developed a new approach based on the Discrete- Dipole Approximation (DDA) (Draine, Astrophys J 333:848–872, 1988; Geuquet and Henrard, Ultramicroscopy 110:1075–1080, 2010) that uses eigenvectors of the particle’s propagator to make a truncated basis for physical quantities (Guillaume et al. Phys Rev B 88(245439), 2013). The response of the cluster of particles is then obtained by adding interaction terms which account for multiple scattering between the particles.

KW - Coupling

KW - Discrete-dipole approximation

KW - Electron energy-loss spectroscopy

KW - Hybridization

KW - Localized plasmon

KW - Metallic nanoparticle

KW - Optical extinction

UR - http://www.scopus.com/inward/record.url?scp=84921395651&partnerID=8YFLogxK

U2 - 10.1007/978-94-017-9133-5__44

DO - 10.1007/978-94-017-9133-5__44

M3 - Article

VL - 68

SP - 501

EP - 502

JO - NATO Science for Peace and Security Series B: Physics and Biophysics

JF - NATO Science for Peace and Security Series B: Physics and Biophysics

SN - 1874-6500

ER -