Ben-Jaber, S., Peveler, W. J. , Quesada-Cabrera, R., Cortés, E., Sotelo-Vazquez, C., Abdul-Karim, N., Maier, S. A. and Parkin, I. P. (2016) Photo-induced enhanced Raman spectroscopy for universal ultra-trace detection of explosives, pollutants and biomolecules. Nature Communications, 7, p. 12189. (doi: 10.1038/ncomms12189) (PMID:27412699) (PMCID:PMC4947161)
|
Text
150497.pdf - Published Version Available under License Creative Commons Attribution. 986kB |
Abstract
Surface-enhanced Raman spectroscopy is one of the most sensitive spectroscopic techniques available, with single-molecule detection possible on a range of noble-metal substrates. It is widely used to detect molecules that have a strong Raman response at very low concentrations. Here we present photo-induced-enhanced Raman spectroscopy, where the combination of plasmonic nanoparticles with a photo-activated substrate gives rise to large signal enhancement (an order of magnitude) for a wide range of small molecules, even those with a typically low Raman cross-section. We show that the induced chemical enhancement is due to increased electron density at the noble-metal nanoparticles, and demonstrate the universality of this system with explosives, biomolecules and organic dyes, at trace levels. Our substrates are also easy to fabricate, self-cleaning and reusable.
| Item Type: | Articles |
|---|---|
| Additional Information: | SBJ acknowledges the support of the government of Saudi Arabia, Ministry of Interior, King Fahd Security College (KFSC), WJP is supported by EPSRC Doctoral Prize Fellowship EP/M506448/1, EC is supported by a Marie Curie fellowship. SAM and EC acknowledge the EPSRC Reactive Plasmonics project EP/M013812/1, the Office of Naval Research, the Royal Society, and the Lee-Lucas Chair in Physics. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Peveler, Dr William |
| Authors: | Ben-Jaber, S., Peveler, W. J., Quesada-Cabrera, R., Cortés, E., Sotelo-Vazquez, C., Abdul-Karim, N., Maier, S. A., and Parkin, I. P. |
| College/School: | College of Science and Engineering > School of Engineering > Biomedical Engineering |
| Journal Name: | Nature Communications |
| Publisher: | Nature Publishing Group |
| ISSN: | 2041-1723 |
| ISSN (Online): | 2041-1723 |
| Copyright Holders: | Copyright © 2016 The Authors |
| First Published: | First published in Nature Communications 7: 12189 |
| Publisher Policy: | Reproduced under a Creative Commons License |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric