Comparative study of field enhancement between isolated and coupled metal nanoparticles: An analytical approach

G. Sun; J. B. Khurgin

doi:10.1063/1.3532101

Comparative study of field enhancement between isolated and coupled metal nanoparticles: An analytical approach

G. Sun
, J. B. Khurgin

Engineering

Johns Hopkins University

Research output: Contribution to journal › Article › peer-review

Abstract

We present an analytical model that takes into account the coupling between the surface plasmon modes in complex metal nanostructures. We apply this model to evaluate the field enhancement in the gap of two coupled Au metal spheres embedded in GaN dielectric and compare the result with that obtained by the single sphere. The results show additional improvement can be obtained in the gap depending on the width of the gap. This approach offers a clear physical insight for the enhancement and a straightforward method for optimization.

Original language	English
Article number	263110
Journal	Applied Physics Letters
Volume	97
Issue number	26
DOIs	https://doi.org/10.1063/1.3532101
State	Published - Dec 27 2010

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3532101

Cite this

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title = "Comparative study of field enhancement between isolated and coupled metal nanoparticles: An analytical approach",

abstract = "We present an analytical model that takes into account the coupling between the surface plasmon modes in complex metal nanostructures. We apply this model to evaluate the field enhancement in the gap of two coupled Au metal spheres embedded in GaN dielectric and compare the result with that obtained by the single sphere. The results show additional improvement can be obtained in the gap depending on the width of the gap. This approach offers a clear physical insight for the enhancement and a straightforward method for optimization.",

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N2 - We present an analytical model that takes into account the coupling between the surface plasmon modes in complex metal nanostructures. We apply this model to evaluate the field enhancement in the gap of two coupled Au metal spheres embedded in GaN dielectric and compare the result with that obtained by the single sphere. The results show additional improvement can be obtained in the gap depending on the width of the gap. This approach offers a clear physical insight for the enhancement and a straightforward method for optimization.

AB - We present an analytical model that takes into account the coupling between the surface plasmon modes in complex metal nanostructures. We apply this model to evaluate the field enhancement in the gap of two coupled Au metal spheres embedded in GaN dielectric and compare the result with that obtained by the single sphere. The results show additional improvement can be obtained in the gap depending on the width of the gap. This approach offers a clear physical insight for the enhancement and a straightforward method for optimization.

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JO - Applied Physics Letters

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Comparative study of field enhancement between isolated and coupled metal nanoparticles: An analytical approach

Abstract

ASJC Scopus Subject Areas

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