Chemically Tuning the Localized Surface Plasmon Resonances of Gold Nanostructure Arrays

被引：60

作者：

Zheng, Yue Bing ^{[1
]}

Jensen, Linlin ^{[2
]}

Yan, Wei ^{[1
]}

Walker, Thomas R. ^{[1
]}

Juluri, Bala Krishna ^{[1
]}

Jensen, Lasse ^{[2
]}

Huang, Tony Jun ^{[1
]}

机构：

[1] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA

[2] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 17期

基金：

美国国家科学基金会;

关键词：

OPTICAL-PROPERTIES; NANOSPHERE LITHOGRAPHY; REFRACTIVE-INDEX; SINGLE GOLD; METALLIC NANOSTRUCTURES; SILVER NANOPARTICLES; NANO-OPTICS; LIGHT; METAMATERIALS; NANOLITHOGRAPHY;

D O I：

10.1021/jp8106606

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：

We report on chemical etching of ordered Au nanostructure arrays to continuously tune their localized surface plasmon resonances (LSPR). Real-time extinction spectra were recorded from both Au nanodisks and nanospheres immobilized on glass substrates when immersed in Au etchant. The time-dependent LSPR frequencies, intensities, and bandwidths were studied theoretically with discrete dipole approximations and the Mie solution, and they were correlated with the evolution of the etched Au nanostructures' morphology (as examined by atomic force microscopy). Since this chemical etching method can conveniently and accurately tune LSPR, it offers precise control of plasmonic properties and can be useful in applications such as surface-enhanced Raman spectroscopy and molecular resonance spectroscopy.

引用

页码：7019 / 7024

页数：6

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