Electromagnetic field enhancement for wedge-shaped metal nanostructures

Ali M. Angulo; Cecilia Noguez; George C Schatz

doi:10.1021/jz200825g

Electromagnetic field enhancement for wedge-shaped metal nanostructures

Ali M. Angulo, Cecilia Noguez^*, George C Schatz

^*Corresponding author for this work

Chemistry

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

28 Scopus citations

Abstract

The role of localized surface plasmon resonances near the surface of a silver or gold wedge is discussed based on quasistatic theory. Strongly enhanced electromagnetic field intensities at moderate distances of 1 nm from the wedge are found by manipulating morphology and dielectric environment. The theory also shows that wedge structures can have high enhancements over a broad range of wavelengths, which is of relevance to surface-enhanced Raman scattering and tip-enhanced Raman scattering measurements and for improving plasmon enhanced photovoltaic devices.

Original language	English (US)
Pages (from-to)	1978-1983
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	2
Issue number	16
DOIs	https://doi.org/10.1021/jz200825g
State	Published - Aug 18 2011

Keywords

Nanoparticles and Nanostructures

ASJC Scopus subject areas

Materials Science(all)

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AB - The role of localized surface plasmon resonances near the surface of a silver or gold wedge is discussed based on quasistatic theory. Strongly enhanced electromagnetic field intensities at moderate distances of 1 nm from the wedge are found by manipulating morphology and dielectric environment. The theory also shows that wedge structures can have high enhancements over a broad range of wavelengths, which is of relevance to surface-enhanced Raman scattering and tip-enhanced Raman scattering measurements and for improving plasmon enhanced photovoltaic devices.

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ER -

Electromagnetic field enhancement for wedge-shaped metal nanostructures

Abstract

Keywords

ASJC Scopus subject areas

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