Polyvinyl alcohol-reinforced silk nanofiber/MXene composite aerogel as wearable sensors for detecting human motion

文献类型： 外文期刊

第一作者： Chen, Jie

作者： Chen, Jie;Lu, Zhen-Zhen;Jin, Jing;Zhang, Dong-Yang;Chen, Tao;Zhao, Wei-Guo;Yao, Xiao-Hui;Chen, Jie;Lu, Zhen-Zhen;Jin, Jing;Zhang, Dong-Yang;Chen, Tao;Zhao, Wei-Guo;Yao, Xiao-Hui

作者机构：

关键词： Silk nanofibers; MXene; Aerogel; Flexible pressure sensor

期刊名称：SURFACES AND INTERFACES （ 影响因子：6.3； 五年影响因子：6.3 ）

ISSN： 2468-0230

年卷期： 2025 年 62 卷

页码：

收录情况： SCI

摘要： Flexible pressure sensors are known for their excellent comprehensive performance, making them suitable for a wide range of applications, including in human-machine interfaces, health monitoring, motion detection, wearable electronics, medical devices, and soft robotics. However, the preparation of silk nanofibers (SNFs)based aerogel sensors with optimal resilience remains challenging. Herein, the SNF/ polyvinyl alcohol (PVA)/ MXene composite aerogel was prepared via freeze-drying using SNF, MXene and PVA as raw materials. In this study, PVA was innovatively used as a binder to connect dispersed SNFs, which improved the resilience and mechanical properties of aerogel. The resulting composite aerogel can function as a pressure sensor that exhibits excellent efficacy owing to the synergies among its various components, achieving an impressive gauge factor of 24.61 at a compression strain of 40 %-50 %. The composite aerogel-based sensors also exhibited a rapid response time (load 100 ms, recovery 200 ms), and good stability (1000 cycles). They demonstrated a quick response to pressure and strain signals, enabling them to accurately monitor various human activities such as sound detection, wrist and finger movements, and knee bending.

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