Plasma resonance of silver nanoparticles deposited on the surface of submicron silica spheres

被引：0
|
作者：
Zhu, MW [1 ]
Qian, GD [1 ]
Ding, GJ [1 ]
Wang, ZY [1 ]
Wang, MQ [1 ]
机构：
[1] Zhejiang Univ, Key State Silicon Mat, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2006年 / 96卷 / 2-3期
关键词：
silver nanoparticles; plasma resonance; silica-silver core-shell sphere; optical properties;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Silver nanoparticles of 20 and 70 nm, respectively, were deposited on the surfaces of submicron silica spheres. Plasma resonances of the submicron silica spheres with dense and uniform silver layer were investigated using UV/vis absorption spectra. It was found that the silver plasma resonance band of the silica-silver core-shell spheres was broadened and shifted to longer wavelength several hundreds nanometers. The dipole-dipole interactions of neighboring silver particles and Mie scattering of silver shell as a whole may serve as the mechanism of such shift and broadening. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：489 / 493
页数：5
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