Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures


We investigate the modification of the optical properties of carbon nanotubes (CNTs) resulting from a chemical reaction triggered by the presence of a specific compound (gaseous carbon dioxide (CO2)) and show this mechanism has important consequences for chemical sensing. CNTs have attracted significant research interest because they can be functionalized for a particular chemical, yielding a specific physical response which suggests many potential applications in the fields of nanotechnology and sensing. So far, however, utilizing their optical properties for this purpose has proven to be challenging. We demonstrate the use of localized surface plasmons generated on a nanostructured thin film, resembling a large array of nano-wires, to detect changes in the optical properties of the CNTs. Chemical selectivity is demonstrated using CO2 in gaseous form at room temperature. The demonstrated methodology results additionally in a new, electrically passive, optical sensing configuration that opens up the possibilities of using CNTs as sensors in hazardous/explosive environments.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: This work is licensed under a Creative Commons Attribution 4.0 Unported License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission fromthe license holder to reproduce thematerial.To viewa copy of this license, visit Funding: EPSRC (EP/J010413 and EP/J010391)
Uncontrolled Keywords: carbon nanotubes,localized surface plasmons,gas sensors,optical sensing,Electronic, Optical and Magnetic Materials,Atomic and Molecular Physics, and Optics
Publication ISSN: 2047-7538
Last Modified: 27 Jun 2024 08:42
Date Deposited: 22 Oct 2015 13:25
Full Text Link: http://www.natu ... lsa201636a.html
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-02-26
Published Online Date: 2015-10-24
Accepted Date: 2015-10-20
Submitted Date: 2015-05-19
Authors: Allsop, Thomas D.P. (ORCID Profile 0000-0001-8905-9014)
Arif, Raz
Neal, Ron
Kalli, Kyriacos
Kundrát, Vojtech
Rozhin, Aleksey (ORCID Profile 0000-0003-2271-8227)
Culverhouse, Phil
Webb, David J. (ORCID Profile 0000-0002-5495-1296)



Version: Published Version

License: Creative Commons Attribution


Version: Accepted Version

Access Restriction: Restricted to Repository staff only

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