Near-field Raman imaging and electromagnetic field confinement in the self-assembled monolayer array of gold nanoparticles

Mohammad Kamal Hossain; Toru Shimada; Masahiro Kitajima; Kohei Imura; Hiromi Okamoto

doi:10.1021/la8001543

Near-field Raman imaging and electromagnetic field confinement in the self-assembled monolayer array of gold nanoparticles

Mohammad Kamal Hossain, Toru Shimada, Masahiro Kitajima^*, Kohei Imura, Hiromi Okamoto

^*Corresponding author for this work

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

40 Citations (Scopus)

Abstract

Spatial distribution of surface enhanced Raman activity is visualized for two-dimensional (2D) nearly close-packed and well-ordered monolayer array of gold nanoparticles by using scanning near-field optical microscope. The 2D arrays exhibit highly nonuniform enhancement in Raman scattering, i.e., the regions along the edge of the 2D array are preferentially enhanced. We demonstrate that the spatial distribution of the localized electric field is also nonuniform and agrees well with that of the Raman enhancement.

Original language	English
Pages (from-to)	9241-9244
Number of pages	4
Journal	Langmuir
Volume	24
Issue number	17
DOIs	https://doi.org/10.1021/la8001543
Publication status	Published - 2008 Sept 2
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la8001543

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AU - Okamoto, Hiromi

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Near-field Raman imaging and electromagnetic field confinement in the self-assembled monolayer array of gold nanoparticles

Abstract

ASJC Scopus subject areas

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