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Article: Toward large arrays of multiplex functionalized carbon nanotube sensors for highly sensitive and selective molecular detection

TitleToward large arrays of multiplex functionalized carbon nanotube sensors for highly sensitive and selective molecular detection
Authors
Issue Date2003
Citation
Nano Letters, 2003, v. 3, n. 3, p. 347-351 How to Cite?
AbstractArrays of electrical devices with each comprising multiple single-walled carbon nanotubes (SWNT) bridging metal electrodes are obtained by chemical vapor deposition (CVD) of nanotubes across prefabricated electrode arrays. The ensemble of nanotubes in such a device collectively exhibits large electrical conductance changes under electrostatic gating, owing to the high percentage of semiconducting nanotubes. This leads to the fabrication of large arrays of low-noise electrical nanotube sensors with 100% yield for detecting gas molecules. Polymer functionalization is used to impart high sensitivity and selectivity to the sensors. Polyethyleneimine coating affords n-type nanotube devices capable of detecting NO2 at less than 1 ppb (parts-per-billion) concentrations while being insensitive to NH3. Coating Nafion (a polymeric perfluorinated sulfonic acid ionomer) on nanotubes blocks NO2 and allows for selective sensing of NH3. Multiplex functionalization of a nanotube sensor array is carried out by microspotting. Detection of molecules in a gas mixture is demonstrated with the multiplexed nanotube sensors.
Persistent Identifierhttp://hdl.handle.net/10722/334081
ISSN
2023 Impact Factor: 9.6
2023 SCImago Journal Rankings: 3.411
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQi, Pengfei-
dc.contributor.authorVermesh, Ophir-
dc.contributor.authorGrecu, Mihai-
dc.contributor.authorJavey, Ali-
dc.contributor.authorWang, Qian-
dc.contributor.authorDai, Hongjie-
dc.contributor.authorPeng, Shu-
dc.contributor.authorCho, K. J.-
dc.date.accessioned2023-10-20T06:45:30Z-
dc.date.available2023-10-20T06:45:30Z-
dc.date.issued2003-
dc.identifier.citationNano Letters, 2003, v. 3, n. 3, p. 347-351-
dc.identifier.issn1530-6984-
dc.identifier.urihttp://hdl.handle.net/10722/334081-
dc.description.abstractArrays of electrical devices with each comprising multiple single-walled carbon nanotubes (SWNT) bridging metal electrodes are obtained by chemical vapor deposition (CVD) of nanotubes across prefabricated electrode arrays. The ensemble of nanotubes in such a device collectively exhibits large electrical conductance changes under electrostatic gating, owing to the high percentage of semiconducting nanotubes. This leads to the fabrication of large arrays of low-noise electrical nanotube sensors with 100% yield for detecting gas molecules. Polymer functionalization is used to impart high sensitivity and selectivity to the sensors. Polyethyleneimine coating affords n-type nanotube devices capable of detecting NO2 at less than 1 ppb (parts-per-billion) concentrations while being insensitive to NH3. Coating Nafion (a polymeric perfluorinated sulfonic acid ionomer) on nanotubes blocks NO2 and allows for selective sensing of NH3. Multiplex functionalization of a nanotube sensor array is carried out by microspotting. Detection of molecules in a gas mixture is demonstrated with the multiplexed nanotube sensors.-
dc.languageeng-
dc.relation.ispartofNano Letters-
dc.titleToward large arrays of multiplex functionalized carbon nanotube sensors for highly sensitive and selective molecular detection-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/nl034010k-
dc.identifier.scopuseid_2-s2.0-0038262624-
dc.identifier.volume3-
dc.identifier.issue3-
dc.identifier.spage347-
dc.identifier.epage351-
dc.identifier.isiWOS:000181586600015-

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