Voltage responsivity of pyroelectric sensor

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:21Z
dc.date.accessioned2022-10-05T16:27:53Z
dc.date.available2014-05-20T15:24:21Z
dc.date.available2022-10-05T16:27:53Z
dc.date.created2014-05-20T15:24:21Z
dc.date.issued1999-09-28
dc.identifierSensors and Actuators A-physical. Lausanne: Elsevier B.V. Sa, v. 77, n. 1, p. 28-33, 1999.
dc.identifier0924-4247
dc.identifierhttp://hdl.handle.net/11449/34970
dc.identifier10.1016/S0924-4247(98)00275-1
dc.identifierWOS:000083733500005
dc.identifier0896348165708140
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3907005
dc.description.abstractComposites polymer-ceramic using castor oil-based polyurethane (PU) as non-ferroelectric matrix and Lead Zirconate Titanate (PZT) as ceramic powder have been prepared at thin films form by spin coating. The samples are poled by appropriated electric field to show piezo and pyroelectric activity. The pyroelectric coefficient p(T) at 343 K is obtained to be equal 5.8 X 10(-5) C m(-2) K-1 for a composite with 32 vol.% of ceramic. The figure of merit of this composite is six times higher than of PZT ceramic. The voltage responsivity of the pyroelectric is reduced when the thickness of the sample increases. It was used modulated white light as radiation source to excite the sensor film. The electric signal of the sensor decreases with the light modulation frequency by 1/f. (C) 1999 Elsevier B.V. S.A. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationSensors and Actuators A-physical
dc.relation2.311
dc.relation0,699
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectpiezoelectric composites
dc.subjectpyroelectric sensor
dc.subjectresponsivity
dc.subjectthermally stimulated current
dc.subjectPZT
dc.subjectpolyurethane
dc.titleVoltage responsivity of pyroelectric sensor
dc.typeArtigo


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