The capability to effectively manipulate the transmission coefficient is essential to the detection sensitivity of underwater acoustic equipment. Here we present a tunable transmission coefficient of the underwater membrane resonators by adjusting the surface wettability of the copper platelets. The variation of the surface wettability of the copper platelet can be realized by laser texturing and chemical modification, which further induces an alternative adhesive force. When the membrane resonators are penetrated by an acoustic wave underwater, it exhibits modified vibration patterns attributed to the different surface adhesive force of the attached copper platelet. A greater adhesive force of the copper surface leads to a higher transmission coefficient of the membrane resonators. The transmission coefficient can be adjusted in a range of [−12%, 8%] in comparison to the pristine copper surface in accordance to an adhesive force. This work shows excellent potential in underwater sonic sensing and communication.

有效控制传输系数的能力对于水下声学设备的检测灵敏度至关重要。在这里，我们通过调节铜片的表面可湿性，提出了水下膜谐振器的可调传输系数。铜薄片的表面润湿性的变化可以通过激光纹理化和化学改性来实现，这进一步引起了替代的粘合力。当膜片谐振器被水下声波穿透时，由于附着的铜片的表面粘附力不同，它会表现出改进的振动模式。铜表面的较大粘合力导致膜谐振器的较高透射系数。传输系数可以在[−12％，与原始铜表面相比，根据粘合力为8％]。这项工作显示了在水下声波传感和通信方面的巨大潜力。