Structural and Electrical Properties of Solution Casted-BaTiO₃-Polyvinylidene Composite Layers.

Ceramic doped-polymer structures constitute a new area of functional materials, which are very promising because they combine hardness of ceramics with plasticity, low density, and high breaking strength of polymers. Piezoelectric composites are remarkable candidates for use in technical applications such as sensors and actuators, owing to their ability to integrate electrical and mechanical signals. Here, uniform ceramic-polymer composites (0-3 type) of tetragonal BaTiO₃ powder as a ceramic filler and polyvinylidene fluoride as a polymer matrix were prepared using solution casting.

Calcium Nitrate Tetra-Hydrate-Doped Polyvinylidene Fluoride Thin Films as Potential Devices for Pressure Sensors.

Calcium nitrate tetra-hydrate [Ca(NO₃)₂·4H₂O]-doped polyvinylidene fluoride (PVDF) thin films were successfully prepared by mixing 0.2-g-calcium nitrate into a PVDF solution under ultrasonification. The mixed solution was electrostatically spray coated onto aluminum foil substrates and then heat treated at 120 °C for 60 min in air.