Highly Sensitive, Uniform, and Reproducible Surface-Enhanced Raman Spectroscopy from Hollow Au-Ag Alloy Nanourchins

Zhen Liu, Zhongbo Yang, Bo Peng, Cuong Cao, Chao Zhang, Hongjun You, Qihua Xiong, Zhiyuan Li, Jixiang Fang

Research output: Contribution to journalArticle

173 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)2431-2439
Number of pages9
JournalAdvanced Materials
Volume26
Issue number15
Early online date21 Jan 2014
DOIs
Publication statusPublished - 2014

Keywords

  • surface–enhanced Raman spectroscopy
  • nanourchins
  • hollow Au–Ag alloy
  • sensitivity
  • reproducibility

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

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