Monitoring non-contact high-frequency vibrations requires improving the sensitivity and linear response of iontronic pressure sensors (IPSs). In this study, we incorporate composite electrodes comprising silver nanowires (Ag NWs) and MXene into IPSs to enhance electronic conduction and pseudocapacitance. Moreover, we utilize a novel surface-pillar microstructure, along with an internally randomized multi-bubble structure within the dielectric layer, to significantly expand the linear response range of the sensor. The resulting IPS device demonstrates exceptional linear sensitivity, measuring approximately 153.83 kPa⁻¹, across a broad pressure range of up to 260 kPa. Additionally, it exhibits long-term stability, rapid response and recovery characteristics, and remains functional underwater. Notably, these devices exhibit remarkable capabilities in monitoring ultrasonic vibrations and accurately identifying sound wave vibrations. The integration of composite electrodes, advanced microstructure designs, and their compatibility with underwater applications positions these IPSs as highly promising tools for precise measurements and advancements in flexible electronics technology.

监测非接触式高频振动需要提高离子电子压力传感器 (IPS) 的灵敏度和线性响应。在这项研究中，我们将包含银纳米线 (Ag NW) 和 MXene 的复合电极纳入 IPS 中，以增强电子传导和赝电容。此外，我们利用新颖的表面柱微结构以及介电层内的内部随机多气泡结构，显着扩大了传感器的线性响应范围。由此产生的 IPS 器件表现出卓越的线性灵敏度，在高达 260 kPa 的宽压力范围内测量约为 153.83 kPa ^-1 。此外，它还具有长期稳定性、快速响应和恢复特性，并在水下保持功能。值得注意的是，这些设备在监测超声波振动和准确识别声波振动方面表现出卓越的能力。复合电极的集成、先进的微结构设计及其与水下应用的兼容性使这些 IPS 成为精确测量和柔性电子技术进步的极具前景的工具。