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Radiative damping suppressing and refractive index sensing with elliptical split nanorings
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10.1063/1.4719676
/content/aip/journal/apl/100/20/10.1063/1.4719676
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719676
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Figures

Image of FIG. 1.
FIG. 1.

(a) Geometry of an ESNR. (b) Extinction and scattering spectra of perfect ring and ESNRs. Near field enhancement distributions at the cross section of (c) the perfect ring, (d) the split ring with a = 60 nm, (e) the ESNR with a = 40 nm, and (f) a = 80 nm, where the polarization vectors are indicated by arrows, and the structure volumes of ESNRs are keeping the same as the split ring to minimize the size effect.

Image of FIG. 2.
FIG. 2.

(a) Relationship between the resonance wavelength and the outer radius a of ESNRs. (b) Resonance shift related to water (n = 1.33) for different ESNRs. (c) The evolution of scattering quantum yield versus a. (d) Refractive index sensing performance of ESNRs with different a. In the calculations, the structure volumes of ESNRs are keeping the same as the split ring to minimize the size effect.

Image of FIG. 3.
FIG. 3.

Optical properties and sensing performances of ESNRs with different gap size g, where a = 40 nm, and b = 80 nm. (a) Extinction and scattering spectra. (b) The relationship between the resonance wavelength and g. (c) The evolution of scattering quantum yield and line width versus g. (d) Refractive index sensing performance. (e) Near field enhancement and polarization vector distributions of the ESNR with g = 10 nm and (f) g = 30 nm.

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/content/aip/journal/apl/100/20/10.1063/1.4719676
2012-05-17
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Radiative damping suppressing and refractive index sensing with elliptical split nanorings
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719676
10.1063/1.4719676
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