Theory of three-dimensional nanocrescent light harvesters

Antonio I. Fernández-Domínguez; Yu Luo; Aeneas Wiener; J. B. Pendry; Stefan A. Maier

doi:10.1021/nl303377g

Theory of three-dimensional nanocrescent light harvesters

Antonio I. Fernández-Domínguez, Yu Luo, Aeneas Wiener, J. B. Pendry, Stefan A. Maier

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

43 Citations (Scopus)

Abstract

The optical properties of three-dimensional crescent-shaped gold nanoparticles are studied using a transformation optics methodology. The polarization insensitive, highly efficient, and tunable light harvesting ability of singular nanocrescents is demonstrated. We extend our approach to more realistic blunt nanostructures, showing the robustness of their plasmonic performance against geometric imperfections. Finally, we provide analytical and numerical insights into the sensitivity of the device to radiative losses and nonlocal effects. Our theoretical findings reveal an underlying relation between structural bluntness and spatial dispersion in this particular nanoparticle configuration.

Original language	English
Pages (from-to)	5946-5953
Number of pages	8
Journal	Nano Letters
Volume	12
Issue number	11
DOIs	https://doi.org/10.1021/nl303377g
Publication status	Published - 14 Nov 2012
Externally published	Yes

Keywords

absorption cross section
field enhancement
Localized surface plasmon
nonlocal effects
structural bluntness
transformation optics

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10.1021/nl303377g

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AU - Fernández-Domínguez, Antonio I.

AU - Luo, Yu

AU - Wiener, Aeneas

AU - Pendry, J. B.

AU - Maier, Stefan A.

PY - 2012/11/14

Y1 - 2012/11/14

N2 - The optical properties of three-dimensional crescent-shaped gold nanoparticles are studied using a transformation optics methodology. The polarization insensitive, highly efficient, and tunable light harvesting ability of singular nanocrescents is demonstrated. We extend our approach to more realistic blunt nanostructures, showing the robustness of their plasmonic performance against geometric imperfections. Finally, we provide analytical and numerical insights into the sensitivity of the device to radiative losses and nonlocal effects. Our theoretical findings reveal an underlying relation between structural bluntness and spatial dispersion in this particular nanoparticle configuration.

AB - The optical properties of three-dimensional crescent-shaped gold nanoparticles are studied using a transformation optics methodology. The polarization insensitive, highly efficient, and tunable light harvesting ability of singular nanocrescents is demonstrated. We extend our approach to more realistic blunt nanostructures, showing the robustness of their plasmonic performance against geometric imperfections. Finally, we provide analytical and numerical insights into the sensitivity of the device to radiative losses and nonlocal effects. Our theoretical findings reveal an underlying relation between structural bluntness and spatial dispersion in this particular nanoparticle configuration.

KW - absorption cross section

KW - field enhancement

KW - Localized surface plasmon

KW - nonlocal effects

KW - structural bluntness

KW - transformation optics

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VL - 12

SP - 5946

EP - 5953

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

Theory of three-dimensional nanocrescent light harvesters

Abstract

Keywords

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