Silver nanoparticle arrays enhanced spectral surface plasmon resonance optical sensor

被引：15
|
作者：
Zhang, Wei [1 ,2 ]
Ye, Weixiang [1 ,2 ]
Wang, Cheng [1 ,2 ,3 ]
Li, Wenbin [1 ,2 ]
Yue, Zhao [1 ,2 ]
Liu, Guohua [1 ,2 ]
机构：
[1] Nankai Univ, Coll Elect Informat & Opt Engn, Tianjin 300071, Peoples R China
[2] Nankai Univ, Key Lab Photoelect Thin Film Devices & Technol Ti, Tianjin 300071, Peoples R China
[3] Columbia Univ, Dept Mech Engn, New York, NY 10027 USA
来源：
MICRO & NANO LETTERS | 2014年 / 9卷 / 09期
基金：
中国国家自然科学基金; 新加坡国家研究基金会;
关键词：
Metal nanoparticles - Optical sensors - Silver nanoparticles - Evanescent fields;
D O I：
10.1049/mnl.2014.0203
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An on-chip spectral surface plasmon resonance (SPR) optical sensor with a silver nanoparticle (Ag NP) array has been designed. Dextran (Dex)-capped Ag NP (Dex-Ag NP) arrays were initially self-assembled on the gold (Au) sensing film. The large perturbations and increased penetration depth of the evanescent field, which is caused by the use of the Dex-Ag NP array self-assembled on the Au sensing film, can effectively enhance the SPR spectral shift response. Compared with the bare Au sensing film configuration, the Au sensing film with a Dex-Ag NP array configuration improves sensitivity from 5492 to 6613 nm/RIU.
引用
收藏
页码：585 / 587
页数：3
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