Blueshift and Narrowing of Localized Surface Plasmon Resonance of Silver Nanoparticles Exposed to Plasma

被引：8
|
作者：
Kawaguchi, Kazuhiro [1 ]
Saito, Masahiro [1 ]
Takahiro, Katsumi [1 ]
Yamamoto, Shunya [2 ]
Yoshikawa, Masahito [2 ]
机构：
[1] Kyoto Inst Technol, Dept Chem & Mat Technol, Sakyo Ku, Kyoto 6068585, Japan
[2] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Takasaki, Gunma 3701292, Japan
来源：
PLASMONICS | 2011年 / 6卷 / 03期
关键词：
Localized surface plasmon resonance; Silver nanoparticles; Blueshift; Plasma exposure; ENHANCED RAMAN-SCATTERING; OPTICAL-PROPERTIES; AG FILMS;
D O I：
10.1007/s11468-011-9233-4
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 have demonstrated that plasma treatments of silver nanoparticles bring about blueshift and narrowing in their localized surface plasmon resonance. Surface-enhanced Raman scattering analysis revealed that hydrocarbons adsorbed on silver surfaces were removed effectively by plasma exposure. It was found that the decrease in Raman line intensity for hydrocarbons was correlated well with the blueshift. Our findings indicate that one of the most important factors for remarkable differences in plasmon resonance wavelengths and line widths reported for the silver nanoparticles supported on substrates between most of the experimental data and calculations by Mie's theory is due to the impurity adsorption on silver surfaces.
引用
收藏
页码：535 / 539
页数：5
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