Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/10975
Title: | Methane detection scheme based upon the changing optical constants of a zinc oxide/platinum matrix created by a redox reaction and their effect upon surface plasmons | Authors: | Allsop, Thomas P. Kundrat, Vojtech Kalli, Kyriacos Lee, Graham B. Neal, Ron Bond, Peter R. Shi, Baogul Sullivan, John Culverhouse, Phil Webb, David J. |
Major Field of Science: | Engineering and Technology | Field Category: | Electrical Engineering - Electronic Engineering - Information Engineering | Keywords: | Fibre optics;Gas sensing;Localized surface plasmons;Metal oxide semiconductors;Optical sensing | Issue Date: | Feb-2018 | Source: | Sensors and Actuators, B: Chemical, 2018, vol. 255, pp. 843-853 | Volume: | 255 | Start page: | 843 | End page: | 853 | Journal: | Sensors and Actuators B: Chemical | Abstract: | We detect changes in the optical properties of a metal oxide semiconductor (MOS), ZnO, in a multi-thin-film matrix with platinum in the presence of the hydrocarbon gas methane. A limit of detection of 2% by volume with concentrations from 0 to 10% and maximum resolution of 0.15% with concentrations ranging from 30% to 80% at room temperature are demonstrated along with a selective chemical response to methane over carbon dioxide and the other alkane gases. The device yields the equivalent maximum bulk refractive index spectral sensitivity of 1.8 × 105 nm/RIU. This is the first time that the optical properties of MOS have been monitored to detect the presence of a specific gas. This single observation is a significant result, as MOS have a potentially large number of target gases, thus offering a new paradigm for gas sensing using MOSs. | URI: | https://hdl.handle.net/20.500.14279/10975 | ISSN: | 09254005 | DOI: | 10.1016/j.snb.2017.08.058 | Rights: | © The Authors Published by Elsevier B.V. This is an open access article under the CC BY license | Type: | Article | Affiliation : | Aston University Cyprus University of Technology University of Plymouth |
Appears in Collections: | Άρθρα/Articles |
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1-s2.0-S0925400517314806-main.pdf | Fulltext | 3.78 MB | Adobe PDF | View/Open |
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