Monolithic piezoceramic actuators with a twist

Designing artificial structures with heterogeneous elements and manipulating their interface coupling ways usually bring in synthetic neo-nature to functional devices. For piezoceramic devices, the deformation response refers a variety of extensional, contractional, or shear modes crystals, also relies on boundary conditions from morphology design. However, pursue fundamental torsion actuation an integrated component is still long-term tough task due nil twist mode limited by microscopic crystal mirror symmetry. Herein, we demonstrate design cofired monolithic actuators originally overcome this obstacle. The prototype device composed two sets stacked subunits that work artificially reverse face modes, chiral stiffness couplings will synergistically contribute outputs at broad bandwidth. Finite element simulation reveals displacements are highly tunable geometrical dimensions. Transverse deflection measurements manifest stable sizeable linear applied electric fields (around 3.7 µm under 40 V 1 Hz). Importantly, actually introduces more general route enable arbitrary states components.