Detection of Nitrous Oxide using Infrared Optical Plasmonics coupled with Carbon Nanotubes

Abstract

Interest in gas sensing using functionalised carbon nanotubes is a major area of research that utilises changes in their electrical properties induced by the reaction with a specific gas. This paper describes specific gas sensing on an optical platform consisting of a 2-dimensional nano-structured plasmonic array of nano-antennae/nanowires, with topological dimensions of mean radius of 130nm, typical length of 20μm and a period of 500nm. The array is created by the spatial compaction of germanium oxides when the material interacts with ultra-violet irradiance, it can support infra-red localised surface plasmons. Carbon nanotubes are deposited upon the surface of the plasmonic platform followed by the application of the polyethyleneimine polymer. The resulting nanomaterials–photonic platform gives rise to the selective response to nitrous oxide gases, which are a major contributor to atmospheric degradation. We achieve the device sensitivity up to 100% atmosphere of nitrous oxide with a detection limit of 109ppm, a maxiumum response time of nineteen seconds and yielding a full-scale deflection of +5.7nm. This work demonstrates that the optical properties of specific carbon nanotubes can be used in a wide range of sensing applications offering a new sensing paradigm.

Publication DOI: https://doi.org/10.1039/D0NA00525H
Divisions: College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Funding: EPSRC (EP/J010413 and EP/J010391) for Aston University and the University of Plymouth along with the University of Hull prosperity partnership EPSRC (EP/R004900/1); Marie Skłodowska-Curie COFUND Action MULTIPLY (project 713694) and the Spanish MICINN Grant ECOSYSTEM (RTI2018-097957-B-C33); Royal Academy of Engineering/Leverhulme Trust Senior Research Fellowships (LTSRF1617/13/57) and EU Horizon 2020 Research and Innovation Staff Exchange Programme (RISE) under Marie Sklodowska-Curie Action (project 690945 “Carther”)
Uncontrolled Keywords: Engineering(all),Bioengineering,Atomic and Molecular Physics, and Optics,Materials Science(all),Chemistry(all)
Publication ISSN: 2516-0230
Full Text Link:
Related URLs: http://pubs.rsc ... 0/NA/D0NA00525H (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-10
Published Online Date: 2020-09-16
Accepted Date: 2020-09-12
Authors: Allsop, Thomas
Alaraimi, Mohammed
Neal, Ron
Wang, Changle
Ania Castanon, Juan Diego
Webb, David (ORCID Profile 0000-0002-5495-1296)
Culverhouse, Phil
Davey, Paul
Gilbert, James
Rozhin, Aleksey G.

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