Highly tunable infrared extinction properties of gold nanocrescents

被引：265

作者：

Bukasov, Rostislav ^{[1
]}

Shumaker-Parry, Jennifer S. ^{[1
]}

机构：

[1] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA

来源：

NANO LETTERS | 2007年 / 7卷 / 05期

关键词：

D O I：

10.1021/nl062317o

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The infrared extinction properties of gold nanocrescents fabricated using nanosphere template lithography were studied. The nanocrescents exhibit multiple, structurally tunable localized surface plasmon resonances (LSPRs) across a broad spectral range (560-3600 nm). Plasmon resonances in the infrared have large extinction efficiencies of similar to 20 and peaks as narrow as 0.07 eV. The nanocrescents also have high refractive index sensitivities (370-880 nm/RIU) that are proportional to the LSPR wavelengths. The sensing figure of merit measured for ensembles of nanocrescents is as high as 2.4 for near-infrared plasmon resonances.

引用

页码：1113 / 1118

页数：6

共 38 条

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