Flexible tactile sensors that imitate the skin tactile system have attracted extensive research interest due to their potential applications in medical diagnosis, intelligent robots and so on. However, it is still a great challenge to date to fabricate tactile sensors with both high sensitivity and wide detection range due to the difficulties in modulating the resistance variation in the sensing materials in a wide pressure range. Here, a tactile sensor with a novel design based on the hierarchical pressure-peak effect (HPPE) consisting of PVP nanowires and electroless deposition (ELD) silver PDMS micro-pyramids is reported. The HPPE can effectively modulate the resistance change rate by adjusting the change of contact area during compression deformation, and the HPPE tactile sensor was demonstrated to have both ultrahigh sensitivity (11.60-1108.75 kPa-1) and ultrawide pressure range (0.04-600 kPa). The designed HPPE tactile sensor is successfully utilized in detecting multi-level pressures including respiration, finger heart rate, pulse and foot pressures. Moreover, it is used to sense a subtle clamping force in the Leonardo Da Vinci surgical robot demonstrating the potential of the sensor in surgical robot applications. In all these cases, the sensor exhibits enough capability to respond quickly to ultrawide-range pressures with high accuracy and stability.

中文翻译：

---

一种基于分层压力峰效应的覆盖超宽压力范围的超灵敏触觉传感器的新方法。

模仿皮肤触觉系统的柔性触觉传感器由于其在医学诊断，智能机器人等方面的潜在应用而吸引了广泛的研究兴趣。然而，由于难以在宽压力范围内调制感测材料中的电阻变化，因此制造具有高灵敏度和宽检测范围的触觉传感器至今仍是巨大的挑战。在此，报道了一种具有新颖设计的触觉传感器，该触觉传感器基于由PVP纳米线和无电沉积（ELD）银PDMS微金字塔组成的分层压力峰效应（HPPE）。HPPE可通过调节压缩变形过程中的接触面积变化来有效地调节电阻变化率，并且HPPE触觉传感器被证明具有超高灵敏度（11.60-1108）。75 kPa-1）和超宽压力范围（0.04-600 kPa）。设计的HPPE触觉传感器已成功用于检测多级压力，包括呼吸，手指心率，脉搏和足底压力。此外，它还用于感测达芬奇外科手术机器人中的细微夹持力，从而证明了传感器在外科手术机器人应用中的潜力。在所有这些情况下，传感器都具有足够的能力，能够以高精度和高稳定性快速响应超宽范围的压力。它用于感测达芬奇外科手术机器人中的细微夹持力，从而证明了传感器在外科手术机器人应用中的潜力。在所有这些情况下，传感器都具有足够的能力，能够以高精度和高稳定性快速响应超宽范围的压力。它用于感测达芬奇外科手术机器人中的细微夹持力，从而证明了传感器在外科手术机器人应用中的潜力。在所有这些情况下，传感器都具有足够的能力，能够以高精度和高稳定性快速响应超宽范围的压力。