Abstract
Polyvinylidene Fluoride (PVDF) is becoming a widely used piezoelectric material because of its flexibility, low cost, light weight, and biocompatibility. Its electronic properties, such as its permittivity, can be affected by material crystal structure variations, which also greatly impact the material’s application. It is known that external stress and electrical fields can alter the crystal structure of piezoelectric material. In this research, we aim to investigate the relationship between the external electrical field and the permittivity property of PVDF material. The basic standard equations, finite element analysis, and experimental measurement are included in this paper. By using sweeping voltages from −25 V to +25 V using an Agilent Technologies B1500A Semiconductor Device Analyzer, an increase in the permittivity of the PVDF material is observed. In this work, the study of the permittivity change under the application of different electrical fields at room temperature is presented, and the application of the electrical field under different temperatures is also studied and presented.
Highlights
The piezoelectric effect was first discovered by Pierre Curie and Jacques in the 1880s [1].This effect describes the conversion of mechanical energy into electrical energy and vice versa [2,3]
We study the piezoelectric property and the permittivity of the Polyvinylidene Fluoride (PVDF) material
The results include the capacitance of the VS applied voltage and permittivity of the VS electrical field
Summary
The piezoelectric effect was first discovered by Pierre Curie and Jacques in the 1880s [1]. This effect describes the conversion of mechanical energy into electrical energy and vice versa [2,3]. Piezoelectric materials are available in natural form and can be artificially synthesized. Rochelle salt, and tourmaline are examples of natural piezoelectric materials. Some piezoelectric materials, such as Lead Zirconium Titanate (PZT), Lead. Lanthanum Zirconate Titanate (PLZT), Aluminum Nitride (ALN), Zinc Oxide (ZnO), and Polyvinylidene Fluoride (PVDF) are artificially synthesized [3,4]. Polarization happens when an external force is applied to the material and the electrical potential is exhibited within the material at the same time [6]
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