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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/41413
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dc.contributor.authorPonce, M. A.-
dc.contributor.authorParra, R.-
dc.contributor.authorSavu, R.-
dc.contributor.authorJoanni, E.-
dc.contributor.authorBueno, Paulo Roberto-
dc.contributor.authorCilense, M.-
dc.contributor.authorVarela, José Arana-
dc.contributor.authorCastro, M. S.-
dc.date.accessioned2014-05-20T15:32:32Z-
dc.date.accessioned2016-10-25T18:08:48Z-
dc.date.available2014-05-20T15:32:32Z-
dc.date.available2016-10-25T18:08:48Z-
dc.date.issued2009-06-04-
dc.identifierhttp://dx.doi.org/10.1016/j.snb.2009.03.066-
dc.identifier.citationSensors and Actuators B-chemical. Lausanne: Elsevier B.V. Sa, v. 139, n. 2, p. 447-452, 2009.-
dc.identifier.issn0925-4005-
dc.identifier.urihttp://hdl.handle.net/11449/41413-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/41413-
dc.description.abstractIn this work impedance spectroscopy technique was employed in order to characterize the gas-sensing behavior of undoped titanium dioxide(TiO(2)) polycrystalline thin films. The electrical measurements were performed in a sensor-testing chamber that allows independent control of temperature, pressure, gas composition and flow rate. Frequency measurements, in the range from 40 Hz to 110 MHz,were performed in order to evaluate the gas sensor response of the samples as a function of temperature (50-350 degrees C) and surrounding atmosphere (vacuum Or air at atmospheric pressure). Impedance spectroscopy is a very useful and important technique clue to the possibility of using this method for discriminating between grain boundary capacitance (C(gb)) and grain boundary resistance (R(gb)) contributions. Therefore, a simple model taking into account variations in the intergranular potential barriers is proposed in this work. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.format.extent447-452-
dc.language.isoeng-
dc.publisherElsevier B.V. Sa-
dc.sourceWeb of Science-
dc.subjectTitanium oxideen
dc.subjectThin filmsen
dc.subjectGas sensoren
dc.subjectImpedance spectroscopyen
dc.titleImpedance spectroscopy analysis of TiO(2) thin film gas sensors obtained from water-based anatase colloidsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniv Nacl Mar del Plata-
dc.description.affiliationUniv Estadual Paulista UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUniv Nacl Mar del Plata, CONICET, Inst Mat Sci & Technol INTEMA, Mar Del Plata, Argentina-
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.identifier.doi10.1016/j.snb.2009.03.066-
dc.identifier.wosWOS:000267159700030-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofSensors and Actuators B: Chemical-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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