SERS substrate for detection of explosives

Chou, Alison, Jaatinen, Esa, Buividas, Ricardas, Seniutinas, Gediminas, Juodkazis, Saulius, Izake, Emad L., & Fredericks, Peter M. (2012) SERS substrate for detection of explosives. Nanoscale, 4(23), pp. 7419-7424.

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A novel gold coated femtosecond laser nanostructured sapphire surface – an “optical nose” - based on surface-enhanced Raman spectroscopy (SERS) for detecting vapours of explosive substances was investigated. Four different nitroaromatic vapours at room temperature were tested. Sensor responses were unambiguous and showed response in the range of 0.05 – 15 uM at 25 °C. The laser fabricated substrate nanostructures produced up to an eight-fold increase in Raman signal over that observed on the unstructured portions of the substrate. This work demonstrates a simple sensing system that is compatible with commercial manufacturing practices to detect taggants in explosives which can undertake as part of an integrated security or investigative mission.

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ID Code: 57804
Item Type: Journal Article
Refereed: Yes
Keywords: SERS, Raman, nanostructure, vapour detection
DOI: 10.1039/c2nr32409a
ISSN: 2040-3364
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 The Royal Society of Chemistry
Deposited On: 05 Mar 2013 23:13
Last Modified: 08 Mar 2013 10:51

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