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

IF 5.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Surfaces and Interfaces Pub Date : 2025-03-12 DOI:10.1016/j.surfin.2025.106220
Jie Chen , Zhen-Zhen Lu , Jing Jin , Dong-Yang Zhang , Tao Chen , Wei-Guo Zhao , Xiao-Hui Yao
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Abstract

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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来源期刊
Surfaces and Interfaces
Surfaces and Interfaces Chemistry-General Chemistry
CiteScore
8.50
自引率
6.50%
发文量
753
审稿时长
35 days
期刊介绍: The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)
期刊最新文献
Editorial Board Study on the synergistic effect of transition metal doped TiO2 composite catalysts in the catalytic degradation of VOCs Copper-functionalized hydroxyapatite nanoparticles to counteract fungal infections Polyvinyl alcohol–reinforced silk nanofiber/MXene composite aerogel as wearable sensors for detecting human motion In-situ preparation and characterization of defect-free topological insulator surfaces
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