Visualization of localized intense optical fields in single gold-nanoparticle assemblies and ultrasensitive raman active sites

Kohei Imura; Hiromi Okamoto; Mohammad K. Hossain; Masahiro Kitajima

doi:10.1021/nl061650p

Visualization of localized intense optical fields in single gold-nanoparticle assemblies and ultrasensitive raman active sites

Kohei Imura, Hiromi Okamoto^*, Mohammad K. Hossain, Masahiro Kitajima

^*Corresponding author for this work

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

224 Citations (Scopus)

Abstract

We demonstrate visualization of localized intense electromagnetic fields in real space in well-tailored dimeric and trimeric gold nanospheres by using near-field optical techniques. With two-photon induced luminescence and Raman measurements, we show that the electric field is confined at an interstitial site in the aggregate. We also demonstrate optical switching operations for the electric-field localized sites in the trimer structure.

Original language	English
Pages (from-to)	2173-2176
Number of pages	4
Journal	Nano Letters
Volume	6
Issue number	10
DOIs	https://doi.org/10.1021/nl061650p
Publication status	Published - 2006 Oct 1
Externally published	Yes

ASJC Scopus subject areas

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

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10.1021/nl061650p

Cite this

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abstract = "We demonstrate visualization of localized intense electromagnetic fields in real space in well-tailored dimeric and trimeric gold nanospheres by using near-field optical techniques. With two-photon induced luminescence and Raman measurements, we show that the electric field is confined at an interstitial site in the aggregate. We also demonstrate optical switching operations for the electric-field localized sites in the trimer structure.",

author = "Kohei Imura and Hiromi Okamoto and Hossain, {Mohammad K.} and Masahiro Kitajima",

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AU - Kitajima, Masahiro

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AB - We demonstrate visualization of localized intense electromagnetic fields in real space in well-tailored dimeric and trimeric gold nanospheres by using near-field optical techniques. With two-photon induced luminescence and Raman measurements, we show that the electric field is confined at an interstitial site in the aggregate. We also demonstrate optical switching operations for the electric-field localized sites in the trimer structure.

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Visualization of localized intense optical fields in single gold-nanoparticle assemblies and ultrasensitive raman active sites

Abstract

ASJC Scopus subject areas

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