A Tunable Plasmon Resonance in Gold Nanobelts

被引：50

作者：

Anderson, Lindsey J. E. ^{[1
,3
]}

Payne, Courtney M. ^{[2
,3
]}

Zhen, Yu-Rong ^{[1
,3
]}

Nordlander, Peter ^{[1
,3
]}

Hafner, Jason H. ^{[1
,2
,3
]}

机构：

[1] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[2] Rice Univ, Dept Chem, Houston, TX 77005 USA

[3] Rice Univ, Lab Nanophoton, Houston, TX 77005 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 11期

基金：

美国国家科学基金会;

关键词：

Nanowire; nanobelt; nanoribbon; nanoparticle; localized surface plasmon resonance; surface plasmon polariton; plasmonics; nanophotonics; waveguide; ENHANCED RAMAN-SCATTERING; BIOMEDICAL APPLICATIONS; METALLIC NANOWIRES; REMOTE-EXCITATION; NANOANTENNAS; PROPAGATION; NANOSTRUCTURES; SPECTROSCOPY; NANORODS;

D O I：

10.1021/nl203085t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Plasmonic nanowires with sub-100-nm rectangular cross sections were found to exhibit a strong transverse plasmon peak at visible wavelengths. By correlating atomic force microscopy measurements of individual nanobelts with their dark-field scattering spectra, it is seen that the transverse peak tunes with cross-sectional aspect ratio. Simulations revealed that the scattering plasmonic modes are transverse antisymmetric excitations across the nanobelt width. Unlike larger diameter silver nanowires, these nanobelts exhibit sharp, tunable plasmon resonances similar to those of nanoparticles.

引用

页码：5034 / 5037

页数：4

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