Electroelastic metasurface with resonant piezoelectric shunts for tunable wavefront control

Abstract In this paper, we design a tunable phase-modulated metasurface composed of periodically distributed piezoelectric patches with resonant-type shunt circuits. The electroelastic can control the wavefront lowest antisymmetric mode Lamb wave ( A 0 mode) in small footprint due to its subwavelength features. fully coupled electromechanical model is established study transmission characteristics unit and validated through numerical experimental studies. Based on analysis unit, first explore performance single-resonant shunts then extend capability multi-resonant shunts. By only tuning electric loads circuits, utilize proposed accomplish deflection focusing waves at different angles focal points, respectively. Numerical simulations show that deflect 5 kHz 6 flexural by desired less than 2 % deviation. addition, it be tuned achieve nearly three times displacement amplification designed point for wide range from $-75^\circ$?> − 75 ∘ 75 ∘ . Furthermore, shunts, piezoelectric-based anomalous over multiple frequencies (i.e. simultaneously 10 kHz), developing new potentials toward broad engineering applications such as demultiplexing various frequency components or guiding them positions.