Influence of Particle-Substrate Interaction on Localized Plasmon Resonances

被引：146
|
作者：
Vernon, Kristy C. [1 ]
Funston, Alison M. [2 ,3 ]
Novo, Carolina [1 ]
Gomez, Daniel E. [1 ]
Mulvaney, Paul [2 ,3 ]
Davis, Timothy J. [1 ]
机构：
[1] CSIRO, Clayton, Vic 3168, Australia
[2] Univ Melbourne, Inst Bio21, Parkville, Vic 3010, Australia
[3] Univ Melbourne, Sch Chem, Parkville, Vic 3010, Australia
来源：
NANO LETTERS | 2010年 / 10卷 / 06期
关键词：
Surface plasmon; nanoparticle; effective permittivity; nanorod; substrate; ELECTRON-MICROSCOPY; METAL NANOPARTICLE; OPTICAL-PROPERTIES; GOLD NANORODS; SPECTROSCOPY; NANOSTRUCTURES; SHAPE; SIZE;
D O I：
10.1021/nl100423z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We present a theory for determining the localized surface plasmon resonance shifts of arbitrarily shaped metal nanoparticles on a substrate. Using a pseudoparticle concept, an expression for the particle substrate interaction is derived, providing both physical insight and formulas to estimate the shifted plasmon resonance, The theory is verified against measured scattering spectra of nanorods on substrates. Simple formulas are provided to calculate the resonance of nanorods, spheres, and ellipsoids on dielectric substrate.
引用
收藏
页码：2080 / 2086
页数：7
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