Knitted Ti3C2Tx MXene based fiber strain sensor for human-computer interaction

Xiyao Fu; La Li; Shuai Chen; Hao Xu; Junzhi Li; Valerii Shulga; Wei Han

doi:10.1016/j.jcis.2021.07.025

Knitted Ti₃C₂T_x MXene based fiber strain sensor for human-computer interaction

J Colloid Interface Sci. 2021 Dec 15:604:643-649. doi: 10.1016/j.jcis.2021.07.025. Epub 2021 Jul 8.

Authors

Xiyao Fu¹, La Li², Shuai Chen³, Hao Xu¹, Junzhi Li¹, Valerii Shulga¹, Wei Han⁴

Affiliations

¹ Sino-Russian International Joint Laboratory for Clean Energy and Energy Conversion Technology, College of Physics, International Center of Future Science, Jilin University, Changchun 130012, PR China.
² State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences & Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing 100083, China. Electronic address: lali@semi.ac.cn.
³ School of Electrical Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. Electronic address: chen.shuai@ntu.edu.sg.
⁴ Sino-Russian International Joint Laboratory for Clean Energy and Energy Conversion Technology, College of Physics, International Center of Future Science, Jilin University, Changchun 130012, PR China. Electronic address: whan@jlu.edu.cn.

PMID: 34280762
DOI: 10.1016/j.jcis.2021.07.025

Abstract

Fiber-based stretchable electronics with feasibility of weaving into textiles and advantages of light-weight, long-term stability, conformability and easy integration are highly desirable for wearable electronics to realize personalized medicine, artificial intelligence and human health monitoring. Herein, a fiber strain sensor is developed based on the Ti₃C₂T_x MXene wrapped by poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)) polymer nanofibers prepared via electrostatic spinning. Owing to the good conductivity of Ti₃C₂T_x and unique 3D reticular structure with wave shape, the resistance of Ti₃C₂T_x@P(VDF-TrFE) polymer nanofibers changes under external force, thus providing remarkable strain inducted sensing performance. As-fabricated sensor exhibits high gauge factor (GF) of 108.8 in range of 45-66% strain, rapid response of 19 ms, and outstanding durability over 1600 stretching/releasing cycles. The strain sensor is able to monitor vigorous human motions (finger or wrist bending) and subtle physiological signals (blinking, pulse or voice recognition) in real-time. Moreover, a data glove is designed to connect different gestures and expressions to form an intelligent gesture-expression control system, further confirming the practicability of our Ti₃C₂T_x@P(VDF-TrFE) strain sensors in multifunctional wearable electronic devices.

Keywords: Data glove; Fiber electronics; Human-computer interaction; MXene; Strain sensor.

MeSH terms

Artificial Intelligence
Computers
Humans
Textiles
Titanium*
Wearable Electronic Devices*

Substances

Titanium