期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 265, 期 -, 页码 302-309出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.03.035
关键词
Paper-based SERS sensor; Silver nanoflowers; Defect-guided growth; Pre-concentration
资金
- National Natural Science Foundation of China [11774208, 11474187]
- Shandong Provincial Natural Science Foundation, China [ZR2016AM19]
Paper-based SERS sensor has attracted considerable attention recently, resulting from the separation, aggregation and high sensitive detection of biomolecules. However, optical losses, caused by the holes or vase-like defects, affect the overall intensity of the electromagnetic (EM) coupling and then the Raman signal. Silver nanoflowers (AgNFs) connected with silver nanoparticles (AgNPs) arrays are proposed and firstly obtained onto such vase surface to enhance the EM coupling. AgNFs are easily self-assembled on the defects, and the closed packed AgNPs can be formed on the other area. Multiple cascaded amplification mechanisms (localized surface plasmon mode and optical standing waves or refraction) are used to promote the EM magnification. Such paper card is also exploited successfully as an integrated platform, allowing for ultra-sensitivity (1 x 10(-19)M) CV and (1 x 10(-20)M) R6G detection. (C) 2018 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据