Plasmonic properties of copper nanoparticles fabricated by nanosphere lithography

被引：746

作者：

Chan, George H. ^{[1
]}

Zhao, Jing ^{[1
]}

Hicks, Erin M. ^{[1
]}

Schatz, George C. ^{[1
]}

Van Duyne, Richard P. ^{[1
]}

机构：

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

来源：

NANO LETTERS | 2007年 / 7卷 / 07期

关键词：

D O I：

10.1021/nl070648a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The localized surface plasmon resonance (LSPR) of oxide-free Cu nanoparticles fabricated by nanosphere lithography is examined by UV-vis extinction spectroscopy and electrodynamics theory. The LSPR of the Cu nanoparticles is significantly affected by the presence of copper oxides and the removal of the oxide species yields a dramatic difference in the observed LSPR. From a comparison of the LSPR of Cu, Ag, and Au nanoparticles of similar geometry, we conclude that Cu displays an intense and narrow LSPR peak that is comparable to Ag and Au.

引用

页码：1947 / 1952

页数：6

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