Acoustoelectric logic gate prototypes via piezoelectric valley topology

Acoustic logic platforms based on valley phononic crystals offer great potential for on-chip information processing. However, most existing designs adopt optical measurement or externally attached piezoelectric patches for signal readout and lack integrated electrical transduction. Here, we construct a prototype acoustoelectric logic structure using rotated triangular zinc oxide piezoelectric units. Enabled by valley-polarized edge states, the system implements diverse Boolean logic operations via directional control of elastic waves. The inherent piezoelectric effect plays dual roles: it shapes the topological bands and Berry curvature of the phononic system, and acts as a monolithic transducer to generate in situ electrical outputs for logic state readout. Numerical simulations support the robustness of the proposed logic operation against structural perturbations, while the experimental results demonstrate valley edge-state propagation and logic-function readout in the fabricated device. Eliminating additional detection equipment, this integrated design combines acoustic manipulation with intrinsic electrical signal output, presenting a proof-of-concept prototype for integrated acoustoelectric logic functions. It also provides a viable strategy for exploring multifunctional on-chip acoustic information processing systems.