Wearable, washable piezoresistive pressure sensor based on polyurethane sponge coated with composite CNT/CB/TPU

IF 10 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Physics Pub Date : 2025-02-20 DOI:10.1016/j.mtphys.2025.101681

Yan Wang , Wenbo Luo , Yading Wen , Jiafeng Zhao , Chang Chen , Zhuo Chen , Xiao-Sheng Zhang

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引用次数: 0

Abstract

Flexible pressure sensors are widely used in human health detection and human-machine interface interaction. In this paper, a 3D porous flexible pressure sensor based on carbon nanotubes (CNT)/carbon black (CB)/thermoplastic polyurethane (TPU)/polyurethane (PU) sponge is studied. This sensor exhibits good sensitivity, stability and washability. The sensing layer utilizes a conductive network formed by the synergistic effect of CNT and CB, providing excellent performance for the sensor. TPU functions as an adhesive, ensuring the bonding of the conductive material and providing washability to the sensor. Additionally, CB particles enhance the sensitivity of the sensor at low pressure range. The sensor demonstrates a response time of 119 ms, a recovery time of 59 ms, and maintains non-attenuating durability for more than 1000 cycles. This multi-functional pressure sensor can provide a new platform for the designing and developing wearable health monitoring devices, as well as an efficient human-machine interface.

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来源期刊

Materials Today Physics Materials Science-General Materials Science

CiteScore

14.00

自引率

7.80%

发文量

284

审稿时长

15 days

期刊介绍： Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.