Plasmon modes in single gold nanodiscs

Kohei Imura; Kosei Ueno; Hiroaki Misawa; Hiromi Okamoto; Duncan McArthur; Benjamin Hourahine; Francesco Papoff

doi:10.1364/OE.22.012189

Plasmon modes in single gold nanodiscs

Kohei Imura, Kosei Ueno, Hiroaki Misawa, Hiromi Okamoto, Duncan McArthur, Benjamin Hourahine, Francesco Papoff

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

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Abstract

Optical properties of single gold nanodiscs were studied by scanning near-field optical microscopy. Near-field transmission spectra of a single nanodisc exhibited multiple plasmon resonances in the visible to near-infrared region. Near-field transmission images observed at these resonance wavelengths show wavy spatial features depending on the wavelength of observation. To clarify physical pictures of the images, theoretical simulations based on spatial correlation between electromagnetic fundamental modes inside and outside of the disc were performed. Simulated images reproduced the observed spatial structures excited in the disc. Mode-analysis of the simulated images indicates that the spatial features observed in the transmission images originate mainly from a few fundamental plasmon modes of the disc.

Original language	English
Pages (from-to)	12189-12199
Number of pages	11
Journal	Optics Express
Volume	22
Issue number	10
Early online date	13 May 2014
DOIs	https://doi.org/10.1364/OE.22.012189
Publication status	Published - 2014

Keywords

optical properties
single gold nanodiscs
plasmon modes
near-field optical microscopy

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10.1364/OE.22.012189Licence: CC BY 4.0

oe-22-10-12189Final published version, 3.45 MBLicence: CC BY 4.0

Cite this

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title = "Plasmon modes in single gold nanodiscs",

abstract = "Optical properties of single gold nanodiscs were studied by scanning near-field optical microscopy. Near-field transmission spectra of a single nanodisc exhibited multiple plasmon resonances in the visible to near-infrared region. Near-field transmission images observed at these resonance wavelengths show wavy spatial features depending on the wavelength of observation. To clarify physical pictures of the images, theoretical simulations based on spatial correlation between electromagnetic fundamental modes inside and outside of the disc were performed. Simulated images reproduced the observed spatial structures excited in the disc. Mode-analysis of the simulated images indicates that the spatial features observed in the transmission images originate mainly from a few fundamental plasmon modes of the disc.",

keywords = "optical properties, single gold nanodiscs, plasmon modes, near-field optical microscopy",

author = "Kohei Imura and Kosei Ueno and Hiroaki Misawa and Hiromi Okamoto and Duncan McArthur and Benjamin Hourahine and Francesco Papoff",

year = "2014",

doi = "10.1364/OE.22.012189",

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TY - JOUR

T1 - Plasmon modes in single gold nanodiscs

AU - Imura, Kohei

AU - Ueno, Kosei

AU - Misawa, Hiroaki

AU - Okamoto, Hiromi

AU - McArthur, Duncan

AU - Hourahine, Benjamin

AU - Papoff, Francesco

PY - 2014

Y1 - 2014

N2 - Optical properties of single gold nanodiscs were studied by scanning near-field optical microscopy. Near-field transmission spectra of a single nanodisc exhibited multiple plasmon resonances in the visible to near-infrared region. Near-field transmission images observed at these resonance wavelengths show wavy spatial features depending on the wavelength of observation. To clarify physical pictures of the images, theoretical simulations based on spatial correlation between electromagnetic fundamental modes inside and outside of the disc were performed. Simulated images reproduced the observed spatial structures excited in the disc. Mode-analysis of the simulated images indicates that the spatial features observed in the transmission images originate mainly from a few fundamental plasmon modes of the disc.

AB - Optical properties of single gold nanodiscs were studied by scanning near-field optical microscopy. Near-field transmission spectra of a single nanodisc exhibited multiple plasmon resonances in the visible to near-infrared region. Near-field transmission images observed at these resonance wavelengths show wavy spatial features depending on the wavelength of observation. To clarify physical pictures of the images, theoretical simulations based on spatial correlation between electromagnetic fundamental modes inside and outside of the disc were performed. Simulated images reproduced the observed spatial structures excited in the disc. Mode-analysis of the simulated images indicates that the spatial features observed in the transmission images originate mainly from a few fundamental plasmon modes of the disc.

KW - optical properties

KW - single gold nanodiscs

KW - plasmon modes

KW - near-field optical microscopy

UR - http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-10-12189

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DO - 10.1364/OE.22.012189

M3 - Article

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VL - 22

SP - 12189

EP - 12199

JO - Optics Express

JF - Optics Express

IS - 10

ER -

Plasmon modes in single gold nanodiscs

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Ben Hourahine

Francesco Papoff

Building Global Engagements in Research

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Plasmon modes in single gold nanodiscs

Abstract

Keywords

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Ben Hourahine

Francesco Papoff

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Building Global Engagements in Research

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