Enlarging out-of-plane deformation of active actuating multilayer structure with analytical studies using Electroactive polymer
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Electroactive polymers are active materials capable of converting electrical signals into mechanical forces. Analytical studies using ferroelectric polymers, there are increasing researches into highly flexible devices such as displacement. In addition, studies have been conducted on the multilayer structure of EAP to improve driving force for deformable displays. In this study, a ferroelectric polymer-based multilayer PVDF driving device having a sandwich structure (Electrode-PVDF-Electrode) was analyzed using theoretical structural modeling by the finite element method. We studied the behavior of strain properties and out-of-plane strain along the stacked EAP layer and dipole moment direction. It was also possible to achieve two-layer operation by using a tensile strain and a compressive strain together. As a result, it was found that in a stacked multi-layer device, the out-of-plane deformation of the curved tip was significantly improved compared to single layer device.