Zixiao Cai , Mingjuan Xu , Xing Li , Wenhao Liu , Hao Yu , Mingfeng Yuan
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引用次数: 0
Abstract
Flexible pressure sensors based on 2D materials hold great promise for applications in medical health monitoring, wearable electronics, and human-machine interaction. Compared to conventional materials, MXene, a 2D material, exhibits high electrical conductivity, a large specific surface area, and excellent mechanical flexibility, making it an ideal candidate for pressure sensors. However, achieving high sensitivity, fast response, and long-term stability in pressure sensors remains a challenge. In this study, a highly conductive and stable flexible sensing layer was developed using an MXene-Ag nanotube composite. Additionally, a biomimetic microstructure design was employed to optimize the mechanical and electrical properties of the sensor, enhancing the stability of the contact interface and overall sensing performance. Experimental results demonstrate that the proposed sensor exhibits ultrahigh sensitivity (minimum detectable pressure of 0.1 Pa), rapid response time (42 ms), fast recovery time (21 ms), excellent linear response, and outstanding cycling stability (>5000 cycles). Furthermore, the sensor can precisely detect pressure variations at different speeds and has been successfully applied to human motion monitoring, micro-pressure detection, and pulse signal sensing. Notably, in medical diagnostics, the device can accurately detect the pulse signals of cardiovascular disease patients, providing a low-cost, portable, and non-invasive health monitoring solution.
期刊介绍:
Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science.
With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.