Bioinspired cattail-like high-sensitivity, wide strain range, and robust TPU@CNT fiber sensor for motion monitoring

2026-07-27

PRE

Boya Hu

Jixiang Zhou

Hang Xu

Jiajing Zhong

Yiqian Shao

Yingang Gui

Ping-An Yang *

DOI：10.1016/j.sna.2026.118293

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Abstract

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• A biomimetic hollow multicavity architecture with gradient porosity was fabricated by coaxial wet spinning and shaping. • The core-sheath TPU@CNT fiber sensor offers strain sensing, high sensitivity, and stable performance over repeated cycles. • Its hollow, porous, segmented structure redistributes stress, improving tensile strength and deformation capacity. • The fiber sensor enables real-time monitoring of finger, wrist, elbow, knee, and other human movements.

Keywords:

Wearable soft electronics

Coaxial wet-spinning engineering

Biomimetic Typha force-transmission network

Strain sensor

Wet spinning

Bioinspired cattail-like high-sensitivity, wide strain range, and robust TPU@CNT fiber sensor for motion monitoring

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