Plasmonic Nanolenses: Electrostatic Self-Assembly of Hierarchical Nanoparticle Trimers and Their Response to Optical and Electron Beam Stimuli

Julian A. Lloyd; Soon Hock Ng; Amelia C.Y. Liu; Ye Zhu; Wei Chao; Toon Coenen; Joanne Etheridge; Daniel E. Gómez; Udo Bach

doi:10.1021/acsnano.6b07336

Plasmonic Nanolenses: Electrostatic Self-Assembly of Hierarchical Nanoparticle Trimers and Their Response to Optical and Electron Beam Stimuli

Julian A. Lloyd, Soon Hock Ng, Amelia C.Y. Liu, Ye Zhu, Wei Chao, Toon Coenen, Joanne Etheridge, Daniel E. Gómez, Udo Bach

Research output: Journal article publication › Journal article › Academic research › peer-review

36 Citations (Scopus)

Abstract

Asymmetric nanoparticle trimers composed of particles with increasing diameter act as "plasmonic lenses" and have been predicted to exhibit ultrahigh confinement of electromagnetic energy in the space between the two smallest particles. Here we present an electrostatic self-assembly approach for creating gold nanoparticle trimers with an assembly yield of over 60%. We demonstrate that the trimer assembly leads to characteristic red-shifts and show the localization of the relevant plasmon modes by means of cathodoluminescence and electron energy loss spectroscopy. The results are analyzed in terms of surface plasmon hybridization.

Original language	English
Pages (from-to)	1604-1612
Number of pages	9
Journal	ACS Nano
Volume	11
Issue number	2
DOIs	https://doi.org/10.1021/acsnano.6b07336
Publication status	Published - 28 Feb 2017
Externally published	Yes

Keywords

cathodoluminescence
EELS
gold nanoparticle assembly
nanolens
trimer

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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10.1021/acsnano.6b07336

Cite this

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AU - Lloyd, Julian A.

AU - Ng, Soon Hock

AU - Liu, Amelia C.Y.

AU - Zhu, Ye

AU - Chao, Wei

AU - Coenen, Toon

AU - Etheridge, Joanne

AU - Gómez, Daniel E.

AU - Bach, Udo

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N2 - Asymmetric nanoparticle trimers composed of particles with increasing diameter act as "plasmonic lenses" and have been predicted to exhibit ultrahigh confinement of electromagnetic energy in the space between the two smallest particles. Here we present an electrostatic self-assembly approach for creating gold nanoparticle trimers with an assembly yield of over 60%. We demonstrate that the trimer assembly leads to characteristic red-shifts and show the localization of the relevant plasmon modes by means of cathodoluminescence and electron energy loss spectroscopy. The results are analyzed in terms of surface plasmon hybridization.

AB - Asymmetric nanoparticle trimers composed of particles with increasing diameter act as "plasmonic lenses" and have been predicted to exhibit ultrahigh confinement of electromagnetic energy in the space between the two smallest particles. Here we present an electrostatic self-assembly approach for creating gold nanoparticle trimers with an assembly yield of over 60%. We demonstrate that the trimer assembly leads to characteristic red-shifts and show the localization of the relevant plasmon modes by means of cathodoluminescence and electron energy loss spectroscopy. The results are analyzed in terms of surface plasmon hybridization.

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Plasmonic Nanolenses: Electrostatic Self-Assembly of Hierarchical Nanoparticle Trimers and Their Response to Optical and Electron Beam Stimuli

Abstract

Keywords

ASJC Scopus subject areas

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