Highly sensitive, uniform, and reproducible surface-enhanced Raman spectroscopy from hollow Au-Ag alloy nanourchins

Highly sensitive, uniform, and reproducible surface-enhanced Raman spectroscopy from hollow Au-Ag alloy nanourchins

A hierarchical nanoparticle strategy to simultaneously gain super Raman signal amplification, high uniformity, and reproducibility is presented. Using hollow Au-Ag alloy nanourchins, an ultrahigh sensitivity, e.g., down to 1 fM concentrations for DEHP molecule is obtained. A small standard deviation...

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Bibliographic Details
Main Authors: Liu, Zhen, Yang, Zhongbo, Peng, Bo, Cao, Cuong, Zhang, Chao, You, Hongjun, Xiong, Qihua, Li, Zhiyuan, Fang, Jixiang
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Engineering::Materials::Nanostructured materials
Online Access:https://hdl.handle.net/10356/102939
http://hdl.handle.net/10220/19201
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Institution: Nanyang Technological University
Language: English
Description
Summary:A hierarchical nanoparticle strategy to simultaneously gain super Raman signal amplification, high uniformity, and reproducibility is presented. Using hollow Au-Ag alloy nanourchins, an ultrahigh sensitivity, e.g., down to 1 fM concentrations for DEHP molecule is obtained. A small standard deviation of <10% is achieved by simply dropping and evaporating sub-100 nm nanourchins onto a substrate.

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