Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range
Piezoelectric materials are usually characterized using resonant methods. However, piezoelectric polymers are used in broadband devices, thus requiring characterization over a wide range of frequencies. In this work, we present a non-resonant method for the broadband electromechanical characterizati...
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todo:paper_01429418_v37_n_p163_Gonzalez2023-10-03T14:59:10Z Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range Gonzalez, M.G. Sorichetti, P.A. Brazzano, L.C. Santiago, G.D. Broadband electromechanical characterization Clamped piezoelectric Elastic compliance Medical imaging Permittivity Piezoelectric thin films Poly(vinylidene fluoride) - PVDF Ultrasonic transducers Acoustic properties Capacitance measurement Characterization Complex networks Electric properties Medical imaging Permittivity Polymer films Transducers Ultrasonic transducers Broad frequency range Clamped piezoelectric Elastic compliance Equivalent circuit parameter Piezoelectric polymer film Piezoelectric polymers Piezoelectric thin films Poly(vinylidene fluoride) Piezoelectricity Piezoelectric materials are usually characterized using resonant methods. However, piezoelectric polymers are used in broadband devices, thus requiring characterization over a wide range of frequencies. In this work, we present a non-resonant method for the broadband electromechanical characterization of piezoelectric polymer thin films. The procedure is based on measuring the complex capacitance of a sample of known geometry under three conditions: free, blocked and immersed in a fluid of known acoustic properties. The behaviour of the sample under study is modelled as a one-dimensional transducer and treated as a two-port network that relates the measurable electrical and mechanical variables. Also, the sample is considered as a free-space radiator when immersed in a fluid. The method determines the intensive and the equivalent circuit parameters of piezoelectric polymer films, allowing the characterization of elastic and electrical properties in a broad frequency range. In order to test the method, we performed isothermal capacitance measurements on a sample of poly(vinylidene fluoride) at a temperature of 298 K. The sample was measured along the direction of the poling field and in the frequency range from 10 Hz to 10 MHz. The results given by the method agree with those reported by other authors. © 2014 Elsevier Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01429418_v37_n_p163_Gonzalez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Broadband electromechanical characterization Clamped piezoelectric Elastic compliance Medical imaging Permittivity Piezoelectric thin films Poly(vinylidene fluoride) - PVDF Ultrasonic transducers Acoustic properties Capacitance measurement Characterization Complex networks Electric properties Medical imaging Permittivity Polymer films Transducers Ultrasonic transducers Broad frequency range Clamped piezoelectric Elastic compliance Equivalent circuit parameter Piezoelectric polymer film Piezoelectric polymers Piezoelectric thin films Poly(vinylidene fluoride) Piezoelectricity |
| spellingShingle |
Broadband electromechanical characterization Clamped piezoelectric Elastic compliance Medical imaging Permittivity Piezoelectric thin films Poly(vinylidene fluoride) - PVDF Ultrasonic transducers Acoustic properties Capacitance measurement Characterization Complex networks Electric properties Medical imaging Permittivity Polymer films Transducers Ultrasonic transducers Broad frequency range Clamped piezoelectric Elastic compliance Equivalent circuit parameter Piezoelectric polymer film Piezoelectric polymers Piezoelectric thin films Poly(vinylidene fluoride) Piezoelectricity Gonzalez, M.G. Sorichetti, P.A. Brazzano, L.C. Santiago, G.D. Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| topic_facet |
Broadband electromechanical characterization Clamped piezoelectric Elastic compliance Medical imaging Permittivity Piezoelectric thin films Poly(vinylidene fluoride) - PVDF Ultrasonic transducers Acoustic properties Capacitance measurement Characterization Complex networks Electric properties Medical imaging Permittivity Polymer films Transducers Ultrasonic transducers Broad frequency range Clamped piezoelectric Elastic compliance Equivalent circuit parameter Piezoelectric polymer film Piezoelectric polymers Piezoelectric thin films Poly(vinylidene fluoride) Piezoelectricity |
| description |
Piezoelectric materials are usually characterized using resonant methods. However, piezoelectric polymers are used in broadband devices, thus requiring characterization over a wide range of frequencies. In this work, we present a non-resonant method for the broadband electromechanical characterization of piezoelectric polymer thin films. The procedure is based on measuring the complex capacitance of a sample of known geometry under three conditions: free, blocked and immersed in a fluid of known acoustic properties. The behaviour of the sample under study is modelled as a one-dimensional transducer and treated as a two-port network that relates the measurable electrical and mechanical variables. Also, the sample is considered as a free-space radiator when immersed in a fluid. The method determines the intensive and the equivalent circuit parameters of piezoelectric polymer films, allowing the characterization of elastic and electrical properties in a broad frequency range. In order to test the method, we performed isothermal capacitance measurements on a sample of poly(vinylidene fluoride) at a temperature of 298 K. The sample was measured along the direction of the poling field and in the frequency range from 10 Hz to 10 MHz. The results given by the method agree with those reported by other authors. © 2014 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Gonzalez, M.G. Sorichetti, P.A. Brazzano, L.C. Santiago, G.D. |
| author_facet |
Gonzalez, M.G. Sorichetti, P.A. Brazzano, L.C. Santiago, G.D. |
| author_sort |
Gonzalez, M.G. |
| title |
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| title_short |
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| title_full |
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| title_fullStr |
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| title_full_unstemmed |
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| title_sort |
electromechanical characterization of piezoelectric polymer thin films in a broad frequency range |
| url |
http://hdl.handle.net/20.500.12110/paper_01429418_v37_n_p163_Gonzalez |
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AT gonzalezmg electromechanicalcharacterizationofpiezoelectricpolymerthinfilmsinabroadfrequencyrange AT sorichettipa electromechanicalcharacterizationofpiezoelectricpolymerthinfilmsinabroadfrequencyrange AT brazzanolc electromechanicalcharacterizationofpiezoelectricpolymerthinfilmsinabroadfrequencyrange AT santiagogd electromechanicalcharacterizationofpiezoelectricpolymerthinfilmsinabroadfrequencyrange |
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1782026351632449536 |