An acoustically enhanced gold film Raman sensor on a lithium niobate substrate

Jaatinen, Esa A., Adams, Matthew P., Chou, Alison, Parry, Nick McKay and Fredericks, Peter M. (2014) An acoustically enhanced gold film Raman sensor on a lithium niobate substrate. Journal Of Raman Spectroscopy, 45 8: 636-641. doi:10.1002/jrs.4522


Author Jaatinen, Esa A.
Adams, Matthew P.
Chou, Alison
Parry, Nick McKay
Fredericks, Peter M.
Title An acoustically enhanced gold film Raman sensor on a lithium niobate substrate
Journal name Journal Of Raman Spectroscopy   Check publisher's open access policy
ISSN 1097-4555
0377-0486
Publication date 2014-08
Year available 2014
Sub-type Article (original research)
DOI 10.1002/jrs.4522
Open Access Status
Volume 45
Issue 8
Start page 636
End page 641
Total pages 6
Place of publication Chichester, West Sussex, United Kingdom
Publisher John Wiley & Sons
Collection year 2015
Language eng
Formatted abstract
The surface enhanced Raman scattering effect has shown immense potential for detecting trace amounts of explosive vapor molecules. To date, efforts to produce a commercially available, reliable SERS sensor have been impeded by an inability to separate the electromagnetic enhancement produced by the metallic nanostructure from other signal enhancing effects. Here, we show a new Raman sensor that uses surface acoustic waves (SAWs) to produce controllable surface structures on gold films deposited on LiNbO3 substrates that modulate the Raman signal of a target compound (thiophenol) adsorbed on the films. We demonstrate that this sensor can dynamically control the Raman signal simply by changing the SAW's amplitude, allowing the Raman signal enhancement factor to be directly measured with no variation in the concentration of the target compound. The physically adsorbed molecules can be removed from the sensor without physical cleaning or damage, making it possible to reuse it for real-time Raman detection.
Keyword Raman scattering
SERS
Surface acoustic waves
Sensors
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Published online ahead of print 11 June 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
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Created: Sat, 14 Jun 2014, 19:01:02 EST by Matthew Adams on behalf of School of Chemical Engineering