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dc.contributor.authorAbdelhalim A
dc.contributor.authorAbdellah A
dc.contributor.authorScarpa G
dc.contributor.authorLugli P
dc.contributor.editor
dc.date.accessioned2018-05-02T14:41:10Z
dc.date.available2018-05-02T14:41:10Z
dc.date.issued2014
dc.identifier.issn0957-4484
dc.identifier.urihttp://dx.doi.org/10.1088/0957-4484/25/5/055208
dc.identifier.urihttp://iopscience.iop.org/article/10.1088/0957-4484/25/5/055208/meta
dc.identifier.urihttp://hdl.handle.net/10863/4443
dc.description.abstractWe report the fabrication of carbon nanotube (CNT) based gas sensors functionalized with different metallic nanoparticles (NPs) (Au, Pd, Ag) with exceptionally high responses towards four test gases (NH3, CO2, CO and ethanol). The CNT networks were fabricated through a low cost spray deposition process while the NPs were deposited by a thermal evaporation process. CNT based gas sensors functionalized with Au with a nominal thickness of 1.0 nm showed superior response towards NH3, CO and ethanol. The sensors' normalized responses reached 92%, 22% and 32% with concentrations of 100 ppm, 50 ppm and 100 ppm for NH3, CO and ethanol respectively. CNT based gas sensors functionalized with Pd with a nominal thickness of 1.5 nm showed the best performance with CO2. The normalized response reached 3%, 6%, 12% and 17% with concentrations of 500 ppm, 1000 ppm, 2500 ppm and 5000 ppm of CO2 respectively. We also investigated the morphological and optical changes that occur to the NPs upon thermal treatment. Functionalization of CNT films deposited on glass with Au and Ag showed surface plasmon resonance effects that are dependent on the nominal thickness of the functionalization layer. © 2014 IOP Publishing Ltd.en_US
dc.language.isoenen_US
dc.rights
dc.subjectSpray depositionen_US
dc.subjectNanoparticlesen_US
dc.subjectCarbon nanotubes (CNT)en_US
dc.titleMetallic nanoparticles functionalizing carbon nanotube networks for gas sensing applicationsen_US
dc.typeArticleen_US
dc.date.updated2017-09-29T15:12:17Z
dc.publication.title
dc.language.isiEN-GB
dc.journal.titleNanotechnology
dc.description.fulltextreserveden_US


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