Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms

J. Nelayah, M. Kociak, O. Stéphan, N. Geuquet, L. Henrard, F.J. De García Abajo, I. Pastoriza-Santos, L.M. Liz-Marzán, C. Colliex

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

We report on the nanometer scale spectral imaging of surface plasmons within individual silver triangular nanoprisms by electron energy loss spectroscopy and on related discrete dipole approximation simulations. A dependence of the energy and intensity of the three detected modes as function of the edge length is clearly identified both experimentally and with simulations. We show that for experimentally available prisms (edge lengths ca. 70 to 300 nm) the energies and intensities of the different modes show a monotonie dependence as function of the aspect ratio of the prisms. For shorter or longer prisms, deviations to this behavior are identified thanks to simulations. These modes have symmetric charge distribution and result from the strong coupling of the upper and lower triangular surfaces. They also form a standing wave in the in-plane direction and are identified as quasistatic short range surface plasmons of different orders as emphasized within a continuum dielectric model. This model explains in simple terms the measured and simulated energy and intensity changes as function of geometric parameters. By providing a unified vision of surface plasmons in platelets, such a model should be useful for engineering of the optical properties of metallic nanoplatelets.
langue originaleAnglais
Pages (de - à)902-907
Nombre de pages6
journalNano Letters
Volume10
Numéro de publication3
Les DOIs
étatPublié - 10 mars 2010

Empreinte digitale

Plasmons
plasmons
Prisms
prisms
simulation
Electron energy loss spectroscopy
Charge distribution
Platelets
platelets
Silver
standing waves
charge distribution
energy
aspect ratio
Aspect ratio
Optical properties
energy dissipation
silver
engineering
electron energy

Citer ceci

Nelayah, J., Kociak, M., Stéphan, O., Geuquet, N., Henrard, L., De García Abajo, F. J., ... Colliex, C. (2010). Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms. Nano Letters, 10(3), 902-907. https://doi.org/10.1021/nl903653x
Nelayah, J. ; Kociak, M. ; Stéphan, O. ; Geuquet, N. ; Henrard, L. ; De García Abajo, F.J. ; Pastoriza-Santos, I. ; Liz-Marzán, L.M. ; Colliex, C. / Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms. Dans: Nano Letters. 2010 ; Vol 10, Numéro 3. p. 902-907.
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abstract = "We report on the nanometer scale spectral imaging of surface plasmons within individual silver triangular nanoprisms by electron energy loss spectroscopy and on related discrete dipole approximation simulations. A dependence of the energy and intensity of the three detected modes as function of the edge length is clearly identified both experimentally and with simulations. We show that for experimentally available prisms (edge lengths ca. 70 to 300 nm) the energies and intensities of the different modes show a monotonie dependence as function of the aspect ratio of the prisms. For shorter or longer prisms, deviations to this behavior are identified thanks to simulations. These modes have symmetric charge distribution and result from the strong coupling of the upper and lower triangular surfaces. They also form a standing wave in the in-plane direction and are identified as quasistatic short range surface plasmons of different orders as emphasized within a continuum dielectric model. This model explains in simple terms the measured and simulated energy and intensity changes as function of geometric parameters. By providing a unified vision of surface plasmons in platelets, such a model should be useful for engineering of the optical properties of metallic nanoplatelets.",
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Nelayah, J, Kociak, M, Stéphan, O, Geuquet, N, Henrard, L, De García Abajo, FJ, Pastoriza-Santos, I, Liz-Marzán, LM & Colliex, C 2010, 'Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms', Nano Letters, VOL. 10, Numéro 3, p. 902-907. https://doi.org/10.1021/nl903653x

Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms. / Nelayah, J.; Kociak, M.; Stéphan, O.; Geuquet, N.; Henrard, L.; De García Abajo, F.J.; Pastoriza-Santos, I.; Liz-Marzán, L.M.; Colliex, C.

Dans: Nano Letters, Vol 10, Numéro 3, 10.03.2010, p. 902-907.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Two-dimensional quasistatic stationary short range surface plasmons in flat nanoprisms

AU - Nelayah, J.

AU - Kociak, M.

AU - Stéphan, O.

AU - Geuquet, N.

AU - Henrard, L.

AU - De García Abajo, F.J.

AU - Pastoriza-Santos, I.

AU - Liz-Marzán, L.M.

AU - Colliex, C.

PY - 2010/3/10

Y1 - 2010/3/10

N2 - We report on the nanometer scale spectral imaging of surface plasmons within individual silver triangular nanoprisms by electron energy loss spectroscopy and on related discrete dipole approximation simulations. A dependence of the energy and intensity of the three detected modes as function of the edge length is clearly identified both experimentally and with simulations. We show that for experimentally available prisms (edge lengths ca. 70 to 300 nm) the energies and intensities of the different modes show a monotonie dependence as function of the aspect ratio of the prisms. For shorter or longer prisms, deviations to this behavior are identified thanks to simulations. These modes have symmetric charge distribution and result from the strong coupling of the upper and lower triangular surfaces. They also form a standing wave in the in-plane direction and are identified as quasistatic short range surface plasmons of different orders as emphasized within a continuum dielectric model. This model explains in simple terms the measured and simulated energy and intensity changes as function of geometric parameters. By providing a unified vision of surface plasmons in platelets, such a model should be useful for engineering of the optical properties of metallic nanoplatelets.

AB - We report on the nanometer scale spectral imaging of surface plasmons within individual silver triangular nanoprisms by electron energy loss spectroscopy and on related discrete dipole approximation simulations. A dependence of the energy and intensity of the three detected modes as function of the edge length is clearly identified both experimentally and with simulations. We show that for experimentally available prisms (edge lengths ca. 70 to 300 nm) the energies and intensities of the different modes show a monotonie dependence as function of the aspect ratio of the prisms. For shorter or longer prisms, deviations to this behavior are identified thanks to simulations. These modes have symmetric charge distribution and result from the strong coupling of the upper and lower triangular surfaces. They also form a standing wave in the in-plane direction and are identified as quasistatic short range surface plasmons of different orders as emphasized within a continuum dielectric model. This model explains in simple terms the measured and simulated energy and intensity changes as function of geometric parameters. By providing a unified vision of surface plasmons in platelets, such a model should be useful for engineering of the optical properties of metallic nanoplatelets.

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