Metal nano-strip optical resonators.
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TLDR
The possibility of obtaining large local fields in a narrow (5nm) gap between two metal strips by taking advantage of the plasmon field distribution and boundary conditions is considered, demonstrating the feasibility of at least 10-fold field magnitude enhancement.Abstract:
Rectangular gold and silver nano-strips embedded in glass or water are considered as optical resonators. Their scattering cross section and field enhancements in the case of p-polarized plane-wave illumination are analyzed using a surface integral equation method. Peaks in the scattering spectra are shown to be related to the resonant excitation of forward and backward travelling short-range surface plasmon polaritons in thin metal strips. The influence of angle of incidence and strip thickness on resonances is investigated. Finally, we consider the possibility of obtaining large local fields in a narrow (5nm) gap between two metal strips by taking advantage of the plasmon field distribution and boundary conditions, demonstrating the feasibility of at least 10-fold field magnitude enhancement.read more
Citations
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Plasmonics for extreme light concentration and manipulation.
Jon A. Schuller,Edward S. Barnard,Wenshan Cai,Young Chul Jun,Justin S. White,Mark L. Brongersma +5 more
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General properties of slow-plasmon resonant nanostructures: nano-antennas and resonators
TL;DR: It is shown that, in the limit of extremely thin strips and narrow gaps, both structures exhibit the same Q factor of the resonance which is primarily determined by the complex dielectric function of metal.
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Plasmonic nanoantenna arrays for the visible
Zhengtong Liu,Alexandra Boltasseva,Rasmus Haugstrup Pedersen,Reuben M. Bakker,Alexander V. Kildishev,Vladimir P. Drachev,Vladimir M. Shalaev +6 more
TL;DR: In this paper, a gold nano-antenna array composed of paired elliptical cylinders is fabricated and studied experimentally and numerically, and the arrays show far-field spectra resonances in the visible range for two orthogonal polarizations.
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Gap Structure Effects on Surface-Enhanced Raman Scattering Intensities for Gold Gapped Rods
TL;DR: It is determined that rough gaps lead to a smaller SERS enhancement than smooth gaps for these structures even though the rough gaps have a larger total surface area.
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Continuous layer gap plasmon resonators.
Michael Grøndahl Nielsen,Dmitri K. Gramotnev,Anders Pors,Ole Albrektsen,Sergey I. Bozhevolnyi +4 more
TL;DR: It is demonstrated both theoretically and experimentally that a gold nanostrip supported by a thin dielectric (silicon dioxide) film and a gold underlay forms an efficient (Fabry-Perot) resonator for gap surface plasmons.
References
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TL;DR: It is demonstrated that the nonradiating character of the silver nanowires together with minimized damping due to the well developed wire crystal structure allow them to apply as efficient surface plasmon Fabry-Perot resonators.
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