Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/568
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dc.contributorDepartment of Applied Physics-
dc.contributorMaterials Research Centre-
dc.creatorChan, HLW-
dc.creatorZhao, Z-
dc.creatorKwok, KW-
dc.creatorChoy, CL-
dc.creatorAlquié, C-
dc.creatorBoué, C-
dc.creatorLewiner, J-
dc.date.accessioned2014-12-11T08:28:20Z-
dc.date.available2014-12-11T08:28:20Z-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10397/568-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 1996 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in H.L.W. Chan et al., J. Appl. Phys. 80, 3982 (1996) and may be found at http://link.aip.org/link/?jap/80/003982en_US
dc.subjectCopolymersen_US
dc.subjectPolarizationen_US
dc.subjectPiezoelectric materialsen_US
dc.subjectFilmsen_US
dc.subjectHeat treatmentsen_US
dc.subjectTransducersen_US
dc.subjectFrequency dependenceen_US
dc.titlePolarization of thick polyvinylidene fluoride/trifluoroethylene copolymer filmsen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage3982-
dc.identifier.epage3991-
dc.identifier.volume80-
dc.identifier.issue7-
dcterms.abstractThick (800 µm) polyvinylidene fluoride/trifluoroethylene (P(VDF-TrFE)) copolymer films for transducer applications are poled under applied voltage at elevated temperatures. By using different heat treatments, poling temperatures, and poling time, we are able to prepare a uniformly poled film with a single resonance peak at 1.3 MHz, or a nonuniformly poled film with two resonances (1.3 and 2.6 MHz), or a film with bimorph structure with a single resonance at 2.6 MHz. The nonuniform polarization which arises from charge injection from the cathode is checked by the pressure wave propagation method. The polarization mechanisms in these thick films are expected to be similar to those previously reported for thin films. The results obtained in this work may lead to practical applications because they suggest a means for controlling transducer frequency by poling.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of applied physics, 1 Oct. 1996, v. 80, no. 7, p. 3982-3991-
dcterms.isPartOfJournal of applied physics-
dcterms.issued1996-10-01-
dc.identifier.isiWOS:A1996VL80100054-
dc.identifier.scopus2-s2.0-0030270515-
dc.identifier.eissn1089-7550-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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