Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/ISAF.2007.4393238 http://hdl.handle.net/11449/34174 |
Resumo: | Pyroelectric sensors work as a thermal transducer converting the non-quantified thermal flux into the output measurable quantity of electrical charge, voltage or current. Ferroelectric ceramics and ferroelectric polymers have been extensively used as thermal detectors. More recently the research in the field of pyroelectricity has been concentrated on discovering materials with higher figures of merit (FOM), which means better sensing materials. Composite materials obtained with ferroelectric ceramics embedded in polymer host have received great attention because of their formability, mechanical resistance and the possibility to change their dielectric property varying the volume fraction of ceramic particles. In this work composite films made of modified lead titanate (PZ34) and poly(ether-ether-ketone) (PEEK) were characterized and used as sensing element to measure X-ray intensity in the ortovoltage range (120 - 300 kVp). The sensor response varies from 2.70 V to 0.80 V in the energy fluency range of 6.30 to 37.20 W/m(2). Furthermore the absorbed energy was analyzed as a function of the ionizing energy. The results indicate that the PZ34/PEEK composite with 60/40 vol.% can be useful to monitor X-ray radiation therapy. |
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Repositório Institucional da UNESP |
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Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage rangePyroelectric sensors work as a thermal transducer converting the non-quantified thermal flux into the output measurable quantity of electrical charge, voltage or current. Ferroelectric ceramics and ferroelectric polymers have been extensively used as thermal detectors. More recently the research in the field of pyroelectricity has been concentrated on discovering materials with higher figures of merit (FOM), which means better sensing materials. Composite materials obtained with ferroelectric ceramics embedded in polymer host have received great attention because of their formability, mechanical resistance and the possibility to change their dielectric property varying the volume fraction of ceramic particles. In this work composite films made of modified lead titanate (PZ34) and poly(ether-ether-ketone) (PEEK) were characterized and used as sensing element to measure X-ray intensity in the ortovoltage range (120 - 300 kVp). The sensor response varies from 2.70 V to 0.80 V in the energy fluency range of 6.30 to 37.20 W/m(2). Furthermore the absorbed energy was analyzed as a function of the ionizing energy. The results indicate that the PZ34/PEEK composite with 60/40 vol.% can be useful to monitor X-ray radiation therapy.Univ Estadual Paulista, UNESP ILHA, SOLTEIRA, Depto Fis & Quim, Jaboticabal, SP, BrazilUniv Estadual Paulista, UNESP ILHA, SOLTEIRA, Depto Fis & Quim, Jaboticabal, SP, BrazilIEEEUniversidade Estadual Paulista (Unesp)Sakamoto, W. K. [UNESP]Estevam, Giuliano Pierrede Carvalho, Aparecido AugustoPontes, Wesleyde Paula, M. H.2014-05-20T15:23:23Z2014-05-20T15:23:23Z2007-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject273-275http://dx.doi.org/10.1109/ISAF.2007.43932382007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics, Vols 1 and 2. New York: IEEE, p. 273-275, 2007.1099-4734http://hdl.handle.net/11449/3417410.1109/ISAF.2007.4393238WOS:00025341610009208963481657081400250066159980825Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics, Vols 1 and 2info:eu-repo/semantics/openAccess2024-07-10T14:08:32Zoai:repositorio.unesp.br:11449/34174Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:02:05.378026Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
title |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
spellingShingle |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range Sakamoto, W. K. [UNESP] |
title_short |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
title_full |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
title_fullStr |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
title_full_unstemmed |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
title_sort |
Ferroelectric ceramic/polymer composite for measuring X-ray intensity in the ortovoltage range |
author |
Sakamoto, W. K. [UNESP] |
author_facet |
Sakamoto, W. K. [UNESP] Estevam, Giuliano Pierre de Carvalho, Aparecido Augusto Pontes, Wesley de Paula, M. H. |
author_role |
author |
author2 |
Estevam, Giuliano Pierre de Carvalho, Aparecido Augusto Pontes, Wesley de Paula, M. H. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Sakamoto, W. K. [UNESP] Estevam, Giuliano Pierre de Carvalho, Aparecido Augusto Pontes, Wesley de Paula, M. H. |
description |
Pyroelectric sensors work as a thermal transducer converting the non-quantified thermal flux into the output measurable quantity of electrical charge, voltage or current. Ferroelectric ceramics and ferroelectric polymers have been extensively used as thermal detectors. More recently the research in the field of pyroelectricity has been concentrated on discovering materials with higher figures of merit (FOM), which means better sensing materials. Composite materials obtained with ferroelectric ceramics embedded in polymer host have received great attention because of their formability, mechanical resistance and the possibility to change their dielectric property varying the volume fraction of ceramic particles. In this work composite films made of modified lead titanate (PZ34) and poly(ether-ether-ketone) (PEEK) were characterized and used as sensing element to measure X-ray intensity in the ortovoltage range (120 - 300 kVp). The sensor response varies from 2.70 V to 0.80 V in the energy fluency range of 6.30 to 37.20 W/m(2). Furthermore the absorbed energy was analyzed as a function of the ionizing energy. The results indicate that the PZ34/PEEK composite with 60/40 vol.% can be useful to monitor X-ray radiation therapy. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01-01 2014-05-20T15:23:23Z 2014-05-20T15:23:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1109/ISAF.2007.4393238 2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics, Vols 1 and 2. New York: IEEE, p. 273-275, 2007. 1099-4734 http://hdl.handle.net/11449/34174 10.1109/ISAF.2007.4393238 WOS:000253416100092 0896348165708140 0250066159980825 |
url |
http://dx.doi.org/10.1109/ISAF.2007.4393238 http://hdl.handle.net/11449/34174 |
identifier_str_mv |
2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics, Vols 1 and 2. New York: IEEE, p. 273-275, 2007. 1099-4734 10.1109/ISAF.2007.4393238 WOS:000253416100092 0896348165708140 0250066159980825 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics, Vols 1 and 2 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
273-275 |
dc.publisher.none.fl_str_mv |
IEEE |
publisher.none.fl_str_mv |
IEEE |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129276471410688 |