Piezo bimorphs are constructed of two active piezo ceramic layers with a passive metal substrate sandwiched in between. Unimorphs deform in a single direction when activated to generate the desired mechanical or electrical output.
The faces of the piezo disc are metallized, and the layers are bonded with either a conductive or nonconductive substrate, which acts as a base and stabilizer for the piezo circular disc. Unimorph piezo discs are comprised of one active piezoelectric layer and one non active layer, whereas bimorph piezo discs are comprised of two active piezoelectric layers.
Piezoelectric discs can be manufactured in two ways – unimorph and bimorph.
