Flexible piezoelectric sensor based on PVDF/ZnO/MWCNT composites for human motion monitoring

IF 2.6 4区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Organic Electronics Pub Date : 2025-07-01 DOI:10.1016/j.orgel.2025.107290

Chuanming Sun, Huifang Liu, Jiaqi Wang, Guangkun Shan, Teng Ren

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引用次数: 0

Abstract

Flexible piezoelectric sensors hold great promise for human motion monitoring; however, achieving high sensitivity, rapid response, and excellent stability remains a significant challenge. In this study, a novel poly (vinylidene fluoride) (PVDF)/zinc oxide (ZnO)/multi-walled carbon nanotube (MWCNT) piezoelectric composite film was fabricated using near-field electrohydrodynamic direct-writing (NFEDW) technology. By optimizing the material composition, the PVDF/ZnO/0.5 wt% MWCNT composite exhibited outstanding piezoelectric performance, with a high sensitivity of 560 mV/N and a fast response time of 5.57 ms, enabling the rapid and accurate detection of external mechanical stimuli. The sensor demonstrated excellent signal stability during a 6000-s cyclic vibration test, confirming its long-term reliability. Furthermore, the sensor can precisely capture subtle physiological signals, showcasing its significant potential for human motion monitoring applications. This study provides a new strategy for designing high-performance flexible piezoelectric sensors and advances their practical applications in intelligent sensing systems.

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基于PVDF/ZnO/MWCNT复合材料的柔性压电传感器用于人体运动监测

柔性压电传感器在人体运动监测方面前景广阔；然而，实现高灵敏度、快速响应和优异的稳定性仍然是一个重大挑战。本研究采用近场电流体直写（NFEDW）技术制备了新型聚偏氟乙烯(PVDF)/氧化锌(ZnO)/多壁碳纳米管（MWCNT）压电复合薄膜。通过优化材料组成，PVDF/ZnO/0.5 wt% MWCNT复合材料表现出优异的压电性能，具有560 mV/N的高灵敏度和5.57 ms的快速响应时间，能够快速准确地检测外部机械刺激。该传感器在6000 s的循环振动试验中表现出良好的信号稳定性，证实了其长期的可靠性。此外，该传感器可以精确捕捉细微的生理信号，显示其在人体运动监测应用中的巨大潜力。该研究为高性能柔性压电传感器的设计提供了新的思路，并促进了柔性压电传感器在智能传感系统中的实际应用。

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来源期刊

Organic Electronics 工程技术-材料科学：综合

CiteScore

6.60

自引率

6.20%

发文量

238

审稿时长

44 days

期刊介绍： Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc. Papers suitable for publication in this journal cover such topics as photoconductive and electronic properties of organic materials, thin film structures and characterization in the context of organic devices, charge and exciton transport, organic electronic and optoelectronic devices.