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 language | English |
|---|---|
| Pages (from-to) | 2431-2439 |
| Number of pages | 9 |
| Journal | Advanced Materials |
| Volume | 26 |
| Issue number | 15 |
| Early online date | 21 Jan 2014 |
| DOIs | |
| Publication status | Published - 2014 |
Keywords
- surface–enhanced Raman spectroscopy
- nanourchins
- hollow Au–Ag alloy
- sensitivity
- reproducibility
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
