Hong Weiqiang, Guo Xiaohui, Zhang Tianxu, Zhang Anqi, Yan Zihao, Zhang Xinyi, Li Xianghui, Guan Yuxin, Liao Dongzhi, Lu Haochen, Liu Hanyu, Hu Jiangtao, Niu Yongzheng, Hong Qi, Zhao Yunong
Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Integrated Circuits, Anhui University, Hefei 230601, P. R. China.
State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Dalian 116024, P. R. China.
ACS Appl Mater Interfaces. 2023 Oct 4;15(39):46347-46356. doi: 10.1021/acsami.3c09841. Epub 2023 Sep 21.
Flexible pressure sensors can be used in human-computer interaction and wearable electronic devices, but one main challenge is to fabricate capacitive sensors with a wide pressure range and high sensitivity. Here, we designed a capacitive pressure sensor based on a bionic cheetah leg microstructure, validated the benefits of the bionic microstructure design, and optimized the structural feature parameters using 3D printing technology. The pressure sensor inspired by the cheetah leg shape has a high sensitivity (0.75 kPa), a wide linear sensing range (0-280 kPa), a fast response time of roughly 80 ms, and outstanding durability (24,000 cycles). Furthermore, the sensor can recognize a finger-operated mouse, monitor human motion, and transmit Morse code information. This work demonstrates that bionic capacitive pressure sensors hold considerable promise for use in wearable devices.
柔性压力传感器可用于人机交互和可穿戴电子设备，但一个主要挑战是制造具有宽压力范围和高灵敏度的电容式传感器。在此，我们设计了一种基于仿生猎豹腿部微结构的电容式压力传感器，验证了仿生微结构设计的优势，并使用3D打印技术优化了结构特征参数。受猎豹腿部形状启发的压力传感器具有高灵敏度（0.75 kPa）、宽线性传感范围（0 - 280 kPa）、约80 ms的快速响应时间以及出色的耐用性（24,000次循环）。此外，该传感器能够识别手指操作的鼠标、监测人体运动并传输摩尔斯电码信息。这项工作表明，仿生电容式压力传感器在可穿戴设备中的应用具有巨大潜力。
