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.
|Number of pages||9|
|Early online date||21 Jan 2014|
|Publication status||Published - 2014|
- surface–enhanced Raman spectroscopy
- hollow Au–Ag alloy
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
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- School of Biological Sciences - Senior Lecturer
- Institute for Global Food Security
- Material and Advanced Technologies for Healthcare