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Designing the plasmonic response of shell nanoparticles: Spectral representation
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10.1063/1.3541257
/content/aip/journal/jcp/134/4/10.1063/1.3541257
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/4/10.1063/1.3541257

Figures

Image of FIG. 1.
FIG. 1.

(a) Real (solid line) and imaginary (dotted line) parts of the spectral variable of nanospheres, s(ω), for silver in air and gold in water with a = 5 nm. The horizontal line at 1/3 shows the eigenvalue, s(n). (b) Corresponding absorption cross sections. Vertical arrows show the location of the resonances.

Image of FIG. 2.
FIG. 2.

(a) Real (solid line) and imaginary (dotted line) parts of the spectral variable, s(ω), for gold nanospheres with a = 15 nm in different hosts with refraction indices , 1.33, 1.47, 1.77, and 2.79. The horizontal line at 1/3 shows the eigenvalue, s(n). (b) Corresponding absorption cross sections. Vertical arrows show the location of the resonances.

Image of FIG. 3.
FIG. 3.

(a) Real (solid line) and imaginary (dotted line) parts of s(ω) for silver nanospheroids in water. Nanoprolates have equal volume, but different aspect ratios. Horizontal lines show the eigenvalues for the longitudinal modes for aspect ratios, a/c, varying from 1 to 5. Vertical arrows indicate the position of the resonances in the absorption cross sections shown in (b).

Image of FIG. 4.
FIG. 4.

(a) Real (solid line) and imaginary (dotted line) parts of s(ω) for gold nanospheroids in water. Nanoprolates have equal volume, but different aspect ratios. Horizontal lines show the eigenvalues for the longitudinal modes for aspect ratios, a/c, varying from 1 to 5. Vertical arrows indicate the position of the resonances in the absorption cross sections shown in (b).

Image of FIG. 5.
FIG. 5.

Model of the cross section of a spherical nanoshell.

Image of FIG. 6.
FIG. 6.

(a) Eigenvalues and (b) weights of the two SPRs, and , corresponding to multipolar distributions with l = 1, 2, 3, 4, 5, and 100 for a single nanoshell as a function of . The weights are normalized by the factor for each l.

Image of FIG. 7.
FIG. 7.

(a) Real (solid line) and imaginary (dotted line) parts of the spectral variable, s(ω), for silver nanoshells in water with equal outer radius nm and inner radii with (red line) and 0.8 (green line). The horizontal solid lines in the right-hand side represent the eigenvalues and weights for both nanoshells. We continue the horizontal lines with dotted lines to use as eye guides. (b) Corresponding absorption cross sections. The inset shows a zoom of the resonances at low wavelengths.

Image of FIG. 8.
FIG. 8.

(a) The same as Fig. 7 but for gold nanoshells in water with , 0.4, 0.6, and 0.8. (b) Corresponding absorption cross sections.

Image of FIG. 9.
FIG. 9.

(a) Real (solid line) and imaginary (dotted line) parts of the spectral variable, s(ω), for the silver–water system shown in the model. The horizontal solid lines show the eigenvalues and their weights for N = 3 with nm, , and when (green line) or (red line). (b) Corresponding absorption cross sections.

Image of FIG. 10.
FIG. 10.

Schematic model of a concentric multishell particle.

Tables

Generic image for table
Table I.

Eigenvalues of the longitudinal and transversal SPRs of prolates nanospheroids of different aspect ratios, a/c.

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/content/aip/journal/jcp/134/4/10.1063/1.3541257
2011-01-27
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Designing the plasmonic response of shell nanoparticles: Spectral representation
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/4/10.1063/1.3541257
10.1063/1.3541257
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