A surface acoustic wave ethanol sensor with zinc oxide nanorods

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dc.contributor.author Giffney, Timothy en
dc.contributor.author Ng, YH en
dc.contributor.author Aw, Kean en
dc.date.accessioned 2017-05-24T00:29:01Z en
dc.date.issued 2012 en
dc.identifier.citation Smart Materials Research 2012:4 pages Article number 210748 2012 en
dc.identifier.issn 2090-3561 en
dc.identifier.uri http://hdl.handle.net/2292/33029 en
dc.description.abstract Surface acoustic wave (SAW) sensors are a class of piezoelectric MEMS sensors which can achieve high sensitivity and excellent robustness. A surface acoustic wave ethanol sensor using ZnO nanorods has been developed and tested. Vertically oriented ZnO nanorods were produced on a ZnO/128∘ rotated Y-cut LiNbO3 layered SAW device using a solution growth method with zinc nitrate, hexamethylenetriamine, and polyethyleneimine. The nanorods have average diameter of 45 nm and height of 1 μm. The SAW device has a wavelength of 60 um and a center frequency of 66 MHz at room temperature. In testing at an operating temperature of 270 with an ethanol concentration of 2300 ppm, the sensor exhibited a 24 KHz frequency shift. This represents a significant improvement in comparison to an otherwise identical sensor using a ZnO thin film without nanorods, which had a frequency shift of 9 KHz. en
dc.language Eng en
dc.publisher Hindawi Publishing Corporation en
dc.relation.ispartofseries Smart Materials Research en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/2090-3561/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri https://creativecommons.org/licenses/by/3.0/ en
dc.title A surface acoustic wave ethanol sensor with zinc oxide nanorods en
dc.type Journal Article en
dc.identifier.doi 10.1155/2012/210748 en
pubs.volume 2012 en
dc.description.version VoR - Version of Record en
dc.rights.holder Copyright: The Author en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Article en
pubs.elements-id 351903 en
pubs.org-id Engineering en
pubs.org-id Mechanical Engineering en
dc.identifier.eissn 2090-357X en
pubs.number 210748 en
pubs.record-created-at-source-date 2012-05-22 en


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