Artículo
Abstract:
This paper presents a model suitable to design and characterize broadband thin film sensors based on piezoelectric polymers. The aim is to describe adequately the sensor behavior, with a reasonable number of parameters and based on well-known physical equations. The mechanical variables are described by an acoustic transmission line. The electrical behavior is described by the quasi-static approximation, given the large difference between the velocities of propagation of the electrical and mechanical disturbances. The line parameters include the effects of the elastic and electrical properties of the material. The model was validated with measurements of a poly(vinylidene flouride) sensor designed for short-pulse detection. The model variables were calculated from the properties of the polymer at frequencies between 100 Hz and 30 MHz and at temperatures between 283 K and 313-K, a relevant range for applications in biology and medicine. The simulations agree very well with the experimental data, predicting satisfactorily the influence of temperature and the dielectric properties of the polymer on the behavior of the sensor. Conversely, the model allowed the calculation of the material dielectric properties from the measured response of the sensor, with good agreement with the published values. © 2014 AIP Publishing LLC.
Registro:
| Documento: | Artículo |
| Título: | Modeling thin-film piezoelectric polymer ultrasonic sensors |
| Autor: | González, M.G.; Sorichetti, P.A.; Santiago, G.D. |
| Filiación: | Grupo de Láser, Óptica de Materiales y Aplicaciones Electromagnéticas (GLOMAE), Departamento de Física, Universidad de Buenos Aires, Paseo Colón 850, Buenos Aires, C1063ACV, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina Grupo de Sistemas Dispersos-Laboratorio de Sistemas Líquidos (GSD-LSL), Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, Buenos Aires, C1063ACV, Argentina |
| Palabras clave: | Electric lines; Piezoelectricity; Thin films; Ultrasonic applications; Acoustic transmission lines; Biology and medicine; Electrical behaviors; Mechanical disturbance; Physical equations; Piezoelectric polymers; Quasistatic approximations; Thin film piezoelectric; Polymers |
| Año: | 2014 |
| Volumen: | 85 |
| Número: | 11 |
| DOI: | http://dx.doi.org/10.1063/1.4901966 |
| Título revista: | Review of Scientific Instruments |
| Título revista abreviado: | Rev. Sci. Instrum. |
| ISSN: | 00346748 |
| CODEN: | RSINA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346748_v85_n11_p_Gonzalez |
Referencias:
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Citas:
---------- APA ----------
González, M.G., Sorichetti, P.A. & Santiago, G.D. (2014) . Modeling thin-film piezoelectric polymer ultrasonic sensors. Review of Scientific Instruments, 85(11).http://dx.doi.org/10.1063/1.4901966
---------- CHICAGO ----------
González, M.G., Sorichetti, P.A., Santiago, G.D. "Modeling thin-film piezoelectric polymer ultrasonic sensors" . Review of Scientific Instruments 85, no. 11 (2014).http://dx.doi.org/10.1063/1.4901966
---------- MLA ----------
González, M.G., Sorichetti, P.A., Santiago, G.D. "Modeling thin-film piezoelectric polymer ultrasonic sensors" . Review of Scientific Instruments, vol. 85, no. 11, 2014.http://dx.doi.org/10.1063/1.4901966
---------- VANCOUVER ----------
González, M.G., Sorichetti, P.A., Santiago, G.D. Modeling thin-film piezoelectric polymer ultrasonic sensors. Rev. Sci. Instrum. 2014;85(11).http://dx.doi.org/10.1063/1.4901966
