Electromagnetic Field Enhancement for Wedge-Shaped Metal Nanostructures

被引：31

作者：

Angulo, Ali M. ^{[1
]}

Noguez, Cecilia ^{[1
]}

Schatz, George C. ^{[2
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2011年 / 2卷 / 16期

关键词：

ELECTROSTATIC EDGE MODES; OPTICAL-PROPERTIES; PLASMON RESONANCE; DIELECTRIC WEDGE; PROBE TIPS; SPECTROSCOPY; NANOPARTICLES; SIMULATION; NANOPRISMS; SCATTERING;

D O I：

10.1021/jz200825g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：1978 / 1983

页数：6

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