Capacitive pressure sensors with high flexibility, sensitivity, and excellent healable properties are desirable for a wide variety of applications, such as e‐skin. However, implementing these characteristics onto a device presently remains a great challenge. In this work, a flexible pressure sensor with high sensitivity and strong healable properties has been developed based on healable polyurethane (HPU), silver nanowires and graphene. The HPU‐based microstructured capacitive pressure sensor exhibited a high sensitivity of 1.9 kPa⁻¹ (<3 kPa), a fast response time (<100 ms), low detection limit (10 Pa), and long‐term durability (1000 cycles). Touch‐finger and vocal‐cord vibration detection have been demonstrated and exhibit a high sensitivity to both static and dynamic pressure. More notably, the entire pressure sensor including the dielectric layer and electrodes is omni‐healable after complete separation. The prototype has experimentally shown tremendous potential for wearable, healable applications, such as healthcare monitoring and human‐machine interfaces.

中文翻译：

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具有微阵列结构的全愈合，高灵敏度电容式压力传感器

具有高柔韧性，灵敏度和出色的可修复特性的电容式压力传感器是电子皮肤等各种应用所需要的。然而，目前在设备上实现这些特性仍然是一个巨大的挑战。在这项工作中，已经基于可修复聚氨酯（HPU），银纳米线和石墨烯开发了一种具有高灵敏度和强可修复特性的柔性压力传感器。基于HPU的微结构电容式压力传感器表现出1.9 kPa ^-1的高灵敏度（<3 kPa），快速响应时间（<100 ms），低检测极限（10 Pa）和长期耐用性（1000个循环）。已经证明了触摸手指和声带振动检测，并且对静态和动态压力都具有很高的灵敏度。更值得注意的是，包括电介质层和电极在内的整个压力传感器在完全分离后都可以完全修复。该原型在实验上显示出了可穿戴，可修复应用（如医疗保健监控和人机界面）的巨大潜力。