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Detection of volatile organic compounds by surface enhanced Raman scattering
Date
2012-12-01
Author
Chang, Allan S. P.
Maiti, Amitesh
İleri Ercan, Nazar
Bora, Mihail
Larson, Cindy C.
Britten, Jerald A.
Bond, Tiziana C.
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We present the detection of volatile organic compounds directly in their vapor phase by surface-enhanced Raman scattering (SERS) substrates based on lithographically-defined two-dimensional rectangular array of nanopillars. The type of nanopillars is known as the tapered pillars. For the tapered pillars, SERS enhancement arises from the nanofocusing effect due to the sharp tip on top. SERS experiments were carried out on these substrates using various concentrations of toluene vapor. The results show that SERS signal from a toluene vapor is strongly influenced by the substrate temperature, and the toluene vapor can be detected within minutes of exposing the SERS substrate to the vapor. A simple adsorption model is developed which gives results matching the experimental data. The results also show promising potential for the use of these substrates in environmental monitoring of gases and vapors. © 2012 SPIE.
Subject Keywords
nanostructures
,
sensing
,
spectroscopy
,
Surface Enhanced Raman Scattering
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84874719543&origin=inward
https://hdl.handle.net/11511/105015
DOI
https://doi.org/10.1117/12.920847
Conference Name
Advanced Environmental, Chemical, and Biological Sensing Technologies IX
Collections
Department of Chemical Engineering, Conference / Seminar
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BibTeX
A. S. P. Chang et al., “Detection of volatile organic compounds by surface enhanced Raman scattering,” Baltimore, MD, Amerika Birleşik Devletleri, 2012, vol. 8366, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84874719543&origin=inward.