Modeling of lossy piezoelectric polymers in SPICE

Dahiya, R. S. , Valle, M., Metta, G. and Lorenzelli, L. (2008) Modeling of lossy piezoelectric polymers in SPICE. In: 15th SPIE International Symposium on Smart Structures and Materials and Nondestructive Evaluation and Health Monitoring 2008, San Diego, CA, USA, 09 Mar 2008, 69260Y-69260Y. (doi:10.1117/12.776839)

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Piezoelectric polymers have lossy and dispersive dielectric properties and exhibit higher viscoelastic losses. Due to their lossy behavior, the lossy models developed for piezoceramics are insufficient for evaluating polymers. In this work we present a novel SPICE implementation of piezoelectric polymers model which includes the mechanical, electromechanical and dielectric losses. The mechanical/viscoelastic, dielectric/electrical and piezoelectric/electromechanical losses have been included in the model by using complex elastic, dielectric and piezoelectric constants - obtained from measured impedance of PVDF-TrFE sample. The simulated impedance and phase plots of polymer, working in thickness mode, have been compared with measured data. The impedance and phase plots have also been compared with those obtained by using the lossy model approaches reported earlier.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Dahiya, Professor Ravinder
Authors: Dahiya, R. S., Valle, M., Metta, G., and Lorenzelli, L.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering

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