Synergy of ZnO Nanowire Arrays and Electrospun Membrane Gradient Wrinkles in Piezoresistive Materials for Wide-Sensing Range and High-Sensitivity Flexible Pressure Sensor

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2024-01-26 DOI:10.1007/s42765-023-00359-4

Peng Lei, Yan Bao, Wenbo Zhang, Lu Gao, Xiaofeng Zhu, Jiachen Xu, Jianzhong Ma

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Abstract

Flexible pressure sensors have come under the spotlight because of their widespread adoption in human motion detection and human‒machine interactions. However, manufacturing pressure sensors with broad sensing ranges and large sensitivities continues to be a daunting task. Herein, a pressure sensor based on a gradient wrinkled electrospun polyurethane membrane with MXene-embedded ZnO nanowire arrays (ZAGW) was proposed. Under tiny pressure, dramatic increases in the contact area caused by interlocks of MXene-embedded ZnO nanowire arrays contributed to realizing a high sensitivity (236.5 kPa⁻¹). Additionally, the wide-sensing range (0–260 kPa) came from the fact that a wrinkled membrane with a gradient contact height ensured a continuous contact area change by gradually activating contact wrinkles. Meanwhile, the contact states of the gradient wrinkled membrane at varying pressures were investigated to expound the sensing mechanism of the ZAGW sensor. These exceptional performances enabled the ZAGW sensor to have vast application potential in human motion monitoring and tactile sensing. Furthermore, the ZAGW sensor can be integrated into the sensor array to monitor the pressure distribution. Considering the outstanding performance, the combination of ZnO nanowire arrays and electrospun membrane gradient wrinkles provides an innovative avenue for future sensing research.

Graphical abstract

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压阻材料中的氧化锌纳米线阵列与电纺膜梯度皱纹的协同作用可实现宽传感范围和高灵敏度的柔性压力传感器

柔性压力传感器因其在人体运动检测和人机交互中的广泛应用而备受关注。然而，制造传感范围广、灵敏度高的压力传感器仍然是一项艰巨的任务。本文提出了一种基于梯度起皱电纺聚氨酯膜和嵌入氧化亚氮纳米线阵列（ZAGW）的压力传感器。在微小的压力下，嵌入 MXene 的氧化锌纳米线阵列相互交错导致接触面积急剧增大，从而实现了高灵敏度（236.5 kPa-1）。此外，宽传感范围（0-260 kPa）还源于具有梯度接触高度的皱褶膜通过逐渐激活接触皱褶确保了连续的接触面积变化。同时，研究了梯度皱膜在不同压力下的接触状态，以阐释 ZAGW 传感器的传感机制。这些优异的性能使 ZAGW 传感器在人体运动监测和触觉传感方面具有广阔的应用前景。此外，ZAGW 传感器还可以集成到传感器阵列中，用于监测压力分布。考虑到其出色的性能，氧化锌纳米线阵列与电纺膜梯度皱纹的结合为未来的传感研究提供了一条创新之路。

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.