High-performance flexible pressure sensor based on synergistic enhancement of magnetic field oriented carbon Nanotube/Graphene and microdome array structure

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-03-27 DOI:10.1016/j.cej.2025.162053

Meng Wang, Gongdong Wang, Mingyang Zheng, Weida Liu, Wenwei Lv, Yi Ma, Jinxiong Guo, Blackie Ebo

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引用次数: 0

Abstract

At present, the development of pressure sensors with high sensitivity is still a great challenge. In this study, carbon nanotubes (CNTs) and graphene nanoparticles (GNPs) were used as conductive fillers and polydimethylsiloxane (PDMS) as flexible substrate. A high-performance flexible piezoresistive sensor was prepared by the strategy of combining the magnetic field oriented CNT/GNP microscopic conductive filler network with the macroscopic surface microdome structure design. The microdome array structure with directional conductive network effectively enhances the sensitivity of the sensor under micro-pressure, S = 38.28 kPa⁻¹ (0–1.5 kPa). It also offers a sensing range (0–20 kPa), fast response (100 ms) and excellent stability. Furthermore, the working mechanism of CNT/GNP directional network and microstructure synergistically enhancing sensitivity was thoroughly analyzed. To assess the sensor’s stability in harsh environments, tests under high/low temperatures and salt spray conditions were conducted. Finally, a series of application tests based on the CNT/GNP-PDMS sensor were carried out. The test results show that the designed sensor has potential applications in health monitoring of composite components, wearable devices and human–computer interaction. This work will pave the way for the development of advanced flexible sensors.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.