Design and simulation of stacked PVDF layers with ZnO for piezoelectric nanodevices

Abstract

Stacked PVDF (polyvinylidene difluoride) polymer with zinc oxide (ZnO) coatings for its improved piezoelectricity properties like electric potential, displacement and von mises stress over single layered piezoelectric devices is designed. A thin PVDF polymer is used as a substrate, stacked with a ZnO coated PVDF sheet is analysed for multiple studies and boundary conditions based on both piezoelectric and converse piezoelectric effects. An electric potential of 7.63 mV is generated with a maximum displacement of 0.71 nm on the application of a force 100 N/m 2 in the negative X direction. The potential generated by the stacked PVDF layer, 13 µm thick, ranges in millivolts which can be further applied in fabrication of nanodevice sensors. To test converse piezoelectric properties, a potential difference of 5 V is applied to the material. A displacement of 5.5 nm with a von mises stress of 5*10 5 N/m 2 is detected. The nanodevice material in this domain produces potential difference in the range of nanovolts which is improved and brought in the range of millivolts by this stacked structure.