Flexible strain sensor enabled by carbon nanotubes-decorated electrospun TPU membrane for human motion monitoring

Xin Yu, Zijian Wu, Ling Weng*, Dawei Jiang, Hassan Algadi, Zhuofan Qin, Zhanhu Guo*, Ben Bin Xu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

High-performance flexible strain sensors are gaining more and more attention with their bespoken detection range, excellent sensing performance and good stability, which are highly desired in the wearable electronics. Herein, a thermoplastic polyurethane elastomer (TPU) fibrous membrane was prepared as a flexible substrate by electrostatic spinning technology, then a coating of polydopamine was formed through fast synthesizing the dopamine on TPU fibrous membrane surface and loaded with CNTs to develop an extremely sensitive flexible strain sensor. The flexible sensor prepared by TPU fibrous membrane coated with polydopamine layer has an outstanding sensibility under the pulling force (GF of 10528.53 with 200% strain), rapid reaction time (188-221 ms), wide sensing range (up to 200%), good stability and durability. The theoretical studies reveals that the underlying cause for the high sensitivity and the inherit relationship between the amount of conducting routes and the length between adjacent conducting fillers in the sensor. The demonstration of device shows a promising application to sense the human motion at various locations of body, with accurate and stable electrical signal output generated at corresponding motion.
Original languageEnglish
Article number2202292
Pages (from-to)1-13
Number of pages13
JournalAdvanced Materials Interfaces
Early online date14 Mar 2023
DOIs
Publication statusE-pub ahead of print - 14 Mar 2023

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