Cao Chong, Zhang Chengchun, Shen Chun, Zhang Yasong, Cheng Wen, Wu Zhengyang, Ren Luquan
Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China.
College of Automotive Engineering, Jilin University, Changchun 130022, China.
Micromachines (Basel). 2025 Apr 29;16(5):526. doi: 10.3390/mi16050526.
The aim of this paper is to develop a compact, rapid-response pressure sensor for underwater propulsion. Flexible pressure sensors are widely utilized in human-computer interactions and wearable electronic devices; however, manufacturing capacitive sensors that offer a broad pressure range and high sensitivity presents significant challenges. Inspired by the dermal papillary microstructure, a capacitive pressure sensor was prepared by infusing polydimethylsiloxane (PDMS) inside an anodic aluminum oxide (AAO) template and then demolding it. The resulting pressure sensor exhibits several key characteristics: high linearity in the range of -5.2 to 6.3 kPa, a comprehensive range for both positive and negative pressure sensing in air or water environments, a quick response time of 52 ms, a recovery time of 40 ms, and excellent stability. The sensor presented in this work is innovatively applied to detect underwater negative pressure, and it is employed for the swift detection of positive and negative pressure changes in underwater thrusters. This work highlights the promising potential of biomimetic flexible capacitive pressure sensors across various applications.
本文的目的是开发一种用于水下推进的紧凑型快速响应压力传感器。柔性压力传感器在人机交互和可穿戴电子设备中得到了广泛应用；然而，制造具有宽压力范围和高灵敏度的电容式传感器面临着重大挑战。受真皮乳头微观结构的启发，通过将聚二甲基硅氧烷（PDMS）注入阳极氧化铝（AAO）模板内部然后脱模，制备了一种电容式压力传感器。所得压力传感器具有几个关键特性：在-5.2至6.3 kPa范围内具有高线性度，在空气或水环境中对正负压力传感具有全面的范围，快速响应时间为52毫秒，恢复时间为40毫秒，以及出色的稳定性。这项工作中提出的传感器被创新性地应用于检测水下负压，并用于快速检测水下推进器中的正负压力变化。这项工作突出了仿生柔性电容式压力传感器在各种应用中的广阔前景。
