Anomalous light transmission from plasmonic-capped nanoapertures

Kohei Imura; Kosei Ueno; Hiroaki Misawa; Hiromi Okamoto

doi:10.1021/nl103408h

Anomalous light transmission from plasmonic-capped nanoapertures

Kohei Imura, Kosei Ueno, Hiroaki Misawa, Hiromi Okamoto^*

^*Corresponding author for this work

School of Advanced Science and Engineering

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

33 Citations (Scopus)

Abstract

We report an anomalous light transmission phenomenon for a nanoaperture on an opaque screen when the aperture is covered with an opaque cap. In conventional optics, light transmission must decrease when the aperture is capped. However, we found that light transmission is enhanced when the nanodisk is in close proximity to the aperture at a wavelength close to the plasmon resonance. This effect even occurs when the disk is larger than the aperture.

Original language	English
Pages (from-to)	960-965
Number of pages	6
Journal	Nano Letters
Volume	11
Issue number	3
DOIs	https://doi.org/10.1021/nl103408h
Publication status	Published - 2011 Mar 9

Keywords

Plasmonic nanostructure
enhanced light transmission
nanoaperture
nanodisk
scanning near-field optical microscope

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl103408h

Cite this

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AU - Misawa, Hiroaki

AU - Okamoto, Hiromi

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Y1 - 2011/3/9

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AB - We report an anomalous light transmission phenomenon for a nanoaperture on an opaque screen when the aperture is covered with an opaque cap. In conventional optics, light transmission must decrease when the aperture is capped. However, we found that light transmission is enhanced when the nanodisk is in close proximity to the aperture at a wavelength close to the plasmon resonance. This effect even occurs when the disk is larger than the aperture.

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KW - nanodisk

KW - scanning near-field optical microscope

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Anomalous light transmission from plasmonic-capped nanoapertures

Abstract

Keywords

ASJC Scopus subject areas

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