Wang Dakai, Li Bo, Ma Zhichao, Zhang Changchao, Liu Linpeng, Niu Shichao, Han Zhiwu, Ren Luquan
Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin, 130022, China.
Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin, 130022, China; The National Key Laboratory of Automotive Chassis Integration and Bionics (ACIB), College of Biological and Agricultural Engineering, Jilin University, Changchun, 130022, China.
Biosens Bioelectron. 2025 Mar 1;271:117086. doi: 10.1016/j.bios.2024.117086. Epub 2024 Dec 21.
Flexible pressure sensor is a crucial component of tactile sensors and plays an integral role in numerous significant fields. Despite the considerable effort put forth, how to further improve sensitivity with ingenious yet easy-to-manufacture structures and apply them to emerging fields such as structure/materials recognition, human motion monitoring, and human-machine interaction remains a challenge. Here, we develop a highly sensitive flexible capacitive pressure sensor featuring a structured electrode layer with embedded microcracks and a dielectric layer with micro-convex structures, which are combined with an iontronic interface. The sophisticated design endows the sensor with superior perceptual performance, showing a relatively linear sensitivity of 1613 kPa in the range of 50 kPa and a detection limit of ∼6.7 Pa. Due to its excellent sensing capabilities, the sensors have been demonstrated for microstructure/material stiffness recognition and human motion monitoring. Furthermore, by integrating a single sensor with an inertial unit, the sensor gains the capability to output multiple sets of instructions. This work provides innovative design inspiration for flexible electronics.
柔性压力传感器是触觉传感器的关键部件，在众多重要领域发挥着不可或缺的作用。尽管已经付出了巨大努力，但如何通过巧妙且易于制造的结构进一步提高灵敏度，并将其应用于结构/材料识别、人体运动监测和人机交互等新兴领域，仍然是一项挑战。在此，我们开发了一种高灵敏度柔性电容式压力传感器，其具有嵌入微裂纹的结构化电极层和具有微凸结构的介电层，并与离子电子界面相结合。这种精巧的设计赋予了传感器卓越的感知性能，在50 kPa范围内显示出相对线性的1613 kPa灵敏度，检测极限约为6.7 Pa。由于其出色的传感能力，该传感器已被用于微观结构/材料刚度识别和人体运动监测。此外，通过将单个传感器与惯性单元集成，该传感器获得了输出多组指令的能力。这项工作为柔性电子学提供了创新的设计灵感。
