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Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical
Xiangda Ma1, Xueqi Wu1, Wencan Luo1,2
1Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China.
ACS Applied Materials & Interfaces
|March 29, 2024
Summary
This study introduces a new electro-assisted impregnation core-spinning technology (EAICST) for creating advanced textile sweat sensors. This innovation simplifies manufacturing and enhances wearable health monitoring capabilities for potassium ion detection.
Area of Science:
- Materials Science
- Electrochemistry
- Wearable Technology
Background:
- Textile-based sweat sensors offer potential for health monitoring but face manufacturing and performance challenges.
- Existing methods for creating sensing yarns are often complex and inefficient.
- There is a need for robust, easily manufactured wearable sensors for real-time sweat analysis.
Purpose of the Study:
- To develop a simplified and efficient method for fabricating sheath-core electrochemical sensing yarns.
- To create a wearable sensor for continuous and reliable monitoring of potassium ion (K+) levels in sweat.
- To enhance the practicality of textile-based sensors through improved manufacturing and performance characteristics.
Main Methods:
- Developed electro-assisted impregnation core-spinning technology (EAICST) combining impregnation coating and conjugated electrospinning.
- Constructed a sheath-core electrochemical sensing yarn (TPFV/CPP yarn) using PEDOT:PSS-coated carbon fibers (CPP) and a TPU/PAN/F127/valinomycin shell.
- Integrated the sensing yarn into a detachable fabric sensor for sweat analysis.
Main Results:
- Achieved a continuous preparation speed of 10 m/h for the sensing yarn using EAICST.
- Demonstrated excellent sensor performance: sensitivity (54.26 mV/decade), fast response (1.7 s), anti-interference, and long-term stability (>5000 s).
- The resulting fabric sensor exhibited favorable washability and wear resistance.
Conclusions:
- EAICST provides a crucial technical foundation for advanced wearable sweat analysis devices.
- The developed TPFV/CPP yarn-based sensor offers a practical solution for wearable health monitoring.
- This work overcomes key limitations in textile sensor fabrication and performance, paving the way for broader applications.
