A ferroelectric material is a dielectric medium that presents spontaneous electric polarization. By inverting the direction of applied electrical field, the direction of polarization of these materials can be inverted or changed.
Talking about what are microferroelectric materials?
Microferrelectronics is a sub-field of electronics which relates to the study and manufacture of very small electronic designs and components which are based on ferroelectric materials.
Piezoelectric effect in Ferroelectric materials
All the ferroelectric materials exhibit piezoelectricity.Piezoelectricity is a very broad ferroelectric application area.
Talking about Nanogenerator it is a device that converts mechanical/thermal energy as produced by physical change into electricity and the piezoelectric property possessed by the ferroelectric polymers is the principle on which our prototype Nanogenerator work.