Frequency dispersion and field dependence in the thickness mode material constants of PVDF-TRFE copolymers made by AMP Sensors Ltd.

Stewart Sherrit; J. E. Haysom; Harvey D. Wiederick; Benoy K. Mukherjee; Michael Sayer

doi:10.1117/12.305622

16 April 1998 Frequency dispersion and field dependence in the thickness mode material constants of PVDF-TRFE copolymers made by AMP Sensors Ltd.

Stewart Sherrit, J. E. Haysom, Harvey D. Wiederick, Benoy K. Mukherjee, Michael Sayer

Author Affiliations +

Proceedings Volume 3321, 1996 Symposium on Smart Materials, Structures, and MEMS; (1998) https://doi.org/10.1117/12.305622
Event: Smart Materials, Structures and MEMS, 1996, Bangalore, India

Abstract

A set of thickness resonators of PVDF-TrFE copolymer have been characterized as a function of the frequency and DC bias. The first six resonance peaks in the impedance spectra were analyzed to determine the degree of frequency dispersion in the complex elastic, piezoelectric, and dielectric constants. Modeling the dispersion in the material constants as a polynomial in the frequency f produced an excellent fit to the data over the 1 - 30 MHz frequency range. The samples were then tested for non- linearity by analyzing the fundamental resonance as a function of a DC bias field. The field dependence of the PVDF-TrFE samples was much smaller than for comparable samples of a soft PZT.

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Stewart Sherrit, J. E. Haysom, Harvey D. Wiederick, Benoy K. Mukherjee, and Michael Sayer "Frequency dispersion and field dependence in the thickness mode material constants of PVDF-TRFE copolymers made by AMP Sensors Ltd.", Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); https://doi.org/10.1117/12.305622

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