Wide-band electrical and electromechanical properties of polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) piezoelectric films using Electro-Acoustic Reflectometry - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Journal of the Acoustical Society of America Année : 2023

Wide-band electrical and electromechanical properties of polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) piezoelectric films using Electro-Acoustic Reflectometry

Résumé

Thin piezoelectric polymer films are used in more and more high frequency applications. However they are not well characterized up to the gigahertz range. In this paper, polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) films are mechanically and electrically characterized using the Electro-Acoustic Reflectometry (EAR) method from 20 MHz to 2 GHz. In addition to mechanical and electrical properties, nonuniform poling is detected in the tested PVDF-TrFE samples showing a larger piezoelectric constant in the middle of the film and thus generating both even and odd resonance modes.
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Dates et versions

hal-04108259 , version 1 (07-09-2023)

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É. Maréchal, E. Géron, S. Holé. Wide-band electrical and electromechanical properties of polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) piezoelectric films using Electro-Acoustic Reflectometry. Journal of the Acoustical Society of America, 2023, 153 (4), pp.2499. ⟨10.1121/10.0017927⟩. ⟨hal-04108259⟩
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