Measurement of radiant energy using pyroelectric polymer/ceramic composite

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorInstituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso - UFMT-
Autor(es): dc.creatorCavalcante, Edinilton Morais-
Autor(es): dc.creatorKanda, Darcy Hiroe Fujii-
Autor(es): dc.creatorDe Barros Melo, Washington Luiz-
Autor(es): dc.creatorDe Campos Fuzari Jr., Gilberto-
Autor(es): dc.creatorSakamoto, Walter Katsumi-
Data de aceite: dc.date.accessioned2025-08-21T17:21:49Z-
Data de disponibilização: dc.date.available2025-08-21T17:21:49Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2013-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1109/ISAF.2013.6748715-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227614-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227614-
Descrição: dc.descriptionMonitoring 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. © 2013 IEEE.-
Descrição: dc.descriptionDepartamento de Física e Química, Universidade Estadual Paulista - UNESP, Ilha Solteira, São Paulo-
Descrição: dc.descriptionEmpresa Brasileira de Pesquisa Agropecuária - EMBRAPA, São Carlos, São Paulo-
Descrição: dc.descriptionInstituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso - UFMT, Barra do Garças, Mato Grosso-
Descrição: dc.descriptionDepartamento de Física e Química, Universidade Estadual Paulista - UNESP, Ilha Solteira, São Paulo-
Formato: dc.format350-351-
Idioma: dc.languageen-
Relação: dc.relation2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013-
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Palavras-chave: dc.subjectcomposite-
Palavras-chave: dc.subjectphotopyroelectric-
Palavras-chave: dc.subjectPVDF-
Palavras-chave: dc.subjectPZT-
Palavras-chave: dc.subjectradiant energy-
Título: dc.titleMeasurement of radiant energy using pyroelectric polymer/ceramic composite-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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