Measurement of Radiant Energy using Pyroelectric Polymer/Ceramic Composite

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dc.contributor.authorCavalcante, Edinilton Morais [UNESP]
dc.contributor.authorFujii Kanda, Darcy Riroe [UNESP]
dc.contributor.authorBarros Melo, Washington Luiz de
dc.contributor.authorCampos Fuzari, Gilberto de
dc.contributor.authorSakamoto, Walter Katsumi [UNESP]
dc.contributor.authorIEEE
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-12-03T13:09:15Z
dc.date.available2014-12-03T13:09:15Z
dc.date.issued2013-01-01
dc.description.abstractMonitoring non-ionizing radiant energy is increasingly demanded for many applications such as automobile, biomedical and security system. Thermal type infrared (IR) sensors can operate at room temperature and pyroelectric materials have high sensitivity and accuracy for that application. Working as thermal transducer pyroelectric sensor converts the non-quantified thermal flux into the output measurable quantity of electrical charge, voltage or current. In the present study the composite made of poly(vinylidene fluoride) -PVDF and lead zirconate titanate (PZT) partially recovered with polyaniline (PAni) conductor polymer has been used as sensor element. The pyroelectric coefficient p(T) was obtained by measuring the pyroelectric reversible current, i.e., measuring the thermally stimulated depolarization current (TSDC) after removing all irreversible contribution to the current such as injected charge during polarization of the sample. To analyze the sensing property of the pyroelectric material, the sensor is irradiated by a high power light source (halogen lamp of 250 W) that is chopped providing a modulated radiation. A device assembled in the laboratory is used to change the light intensity sensor, an aluminum strip having openings with diameters ranging from 1 to 10 mm incremented by one millimeter. The sensor element is assembled between two electrodes while its frontal surface is painted black ink to maximize the light absorption. The signal from the sensor is measured by a Lock-In amplifier model SR530 -Stanford Research Systems. The behavior of the output voltage for an input power at several frequencies for PZT-PAni/PVDF (30/ 70 vol%) composite follows the inverse power law (1/ f) and the linearity can be observed in the frequency range used.en
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Fis & Quim, Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Fis & Quim, Sao Paulo, Brazil
dc.format.extent350-351
dc.identifierhttp://dx.doi.org/10.1109/ISAF.2013.6748715
dc.identifier.citation2013 IEEE International Symposium on the Applications of Ferroelectric and Workshop on the Piezoresponse Force Microscopy (isaf/pfm). New York: IEEE, p. 350-351, 2013.
dc.identifier.lattes3967372991649627
dc.identifier.lattes0896348165708140
dc.identifier.urihttp://hdl.handle.net/11449/112125
dc.identifier.wosWOS:000336807100089
dc.language.isoeng
dc.publisherIeee
dc.relation.ispartof2013 IEEE International Symposium On The Applications Of Ferroelectric And Workshop On The Piezoresponse Force Microscopy (isaf/pfm)
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcomponenten
dc.subjectcompositeen
dc.subjectphotopyroelectricen
dc.subjectradiant energyen
dc.subjectPVDFen
dc.subjectPZTen
dc.titleMeasurement of Radiant Energy using Pyroelectric Polymer/Ceramic Compositeen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.ieee.org/publications_standards/publications/rights/rights_policies.html
dcterms.rightsHolderIeee
unesp.author.lattes3967372991649627[1]
unesp.author.lattes0896348165708140
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Física e Química - FEIS