Nowadays, flexible pressure sensors have broad applications in healthcare monitoring, wearable electronics and so on. However, conventional fabrications are mostly time-consuming, complicated and even use toxic chemical reagents. It is in urgent need to fabricate pressure sensors with high sensitivity in a facile way. In nature, the fingertip skin of human has many epidermal ridges, which can sense small external stimuli. Here, inspired from the fingerprint, we propose a new type of pressure sensor made with reduced graphene oxide (rGO). The rGO film is designed to form a wrinkled structure by a facile stretching-releasing process, which mimics the morphology of fingertip skin. Owing to the fingertip-skin-like wrinkled structure, the pressure sensor exhibits high sensitivity of 5.77 kPa⁻¹ (0 - 490 Pa). It also has a lot of attractive properties, such as fast response (< 100 ms), small detecting pressure (3 Pa) and good repeatability. We show the ability of the pressure sensor in small pressure detecting, human motion monitoring and motion pattern recognition. Furthermore, a translation system and a multi-touch device with spatially resolved detection based on the pressure sensor are developed. This pressure sensor is hopeful to have potential applications in wearable electronics and human–machine interaction systems.

如今，柔性压力传感器已广泛应用于医疗保健监控，可穿戴电子设备等。然而，常规制造大多耗时，复杂并且甚至使用有毒化学试剂。迫切需要以容易的方式制造具有高灵敏度的压力传感器。在自然界中，人的指尖皮肤有许多表皮隆起，可以感觉到小的外部刺激。在这里，受指纹的启发，我们提出了一种由还原型氧化石墨烯（rGO）制成的新型压力传感器。rGO膜设计为通过轻松的拉伸释放过程形成皱纹结构，该过程模仿了指尖皮肤的形态。由于指尖状的皱纹结构，压力传感器显示出5.77 kPa ^-1的高灵敏度（0-490 Pa）。它还具有许多吸引人的特性，例如快速响应（<100 ms），较小的检测压力（3 Pa）和良好的可重复性。我们展示了压力传感器在小压力检测，人体运动监测和运动模式识别中的功能。此外，开发了基于压力传感器的具有空间分辨检测的翻译系统和多点触摸设备。该压力传感器有望在可穿戴电子设备和人机交互系统中具有潜在应用。