Tailoring of Localized Surface Plasmon Resonances of Core-Shell Au@Ag Nanorods by Changing the Thickness of Ag Shell

被引：10
|
作者：
Zhang, Lisheng [1 ]
Zhao, Feng [1 ]
Li, Zhipeng [1 ]
Fang, Yan [1 ]
Wang, Peijie [1 ]
机构：
[1] Capital Normal Univ, Dept Phys, Beijing Key Lab Nano Photon & Nano Struct, Beijing 100048, Peoples R China
来源：
PLASMONICS | 2016年 / 11卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Core/shell; Nanorods; Localized surface plasmon resonances (LSPRs); Finite difference time domain (FDTD); Method; GOLD NANORODS; AQUEOUS ENVIRONMENT; NANOSTRUCTURES; LUMINESCENCE; SCATTERING; GROWTH;
D O I：
10.1007/s11468-016-0204-7
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 the synthesis and the characterization of core-shell Au@Ag nanorods through reduction by the wet chemical method. UV-visible absorption spectra of core-shell Au@Ag nanorods demonstrate the longitudinal mode of localized surface plasmon resonances (LSPRs) can be tailored from 724 to 786 nm by controlling the thickness of the silver shell, as is assessed by transmission electron microscope (TEM). Furthermore, the tunable and well-controlled LSPRs of core-shell Au@Ag nanorods are also investigated by numerical simulation using the finite difference time domain (FDTD) method, which strongly supports the experimental observations. The growth mechanism for core-shell Au@Ag nanorods is proposed, according to experimental observations and numerical calculations.
引用
收藏
页码：1511 / 1517
页数：7
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