Porous Core-Shell Yarn in Wearable Electrochemical Sensors for Real-Time Sweat Monitoring

Area of Science:

• Materials Science
• Electrochemistry
• Wearable Technology

Background:

• Wearable sweat sensors are crucial for noninvasive, real-time health monitoring.
• Developing high-sensitivity sweat sensors with long-term stability remains a significant challenge.

Purpose of the Study:

• To develop an effective methodology for constructing a porous core-shell yarn-based wearable electrochemical sensor.
• To enhance sensitivity, stability, and mass fabrication of sweat sensors.

Main Methods:

• Utilized wet-spinning and acid-etching technology to create porous core-shell yarn structures.
• Fabricated wearable electrochemical sensors based on the developed yarn technology.
• Investigated sensor performance for potassium ion (K+) and pH detection in sweat.

Main Results:

• Achieved high sensitivity for K+ (54.89 mV/dec) and pH (40.2 mV/pH) monitoring.
• Demonstrated excellent sensing stability, long-term durability (>16 h), and bending resistance (>1000 cycles).
• Enabled mass fabrication of sensors with a continuous preparation strategy at speeds up to 500 m/h.

Conclusions:

• The developed porous core-shell yarn-based sensor offers a promising solution for sensitive and stable sweat analysis.
• This technology facilitates mass production, paving the way for commercialization of wearable health-detection systems.
• The electrochemical sensors show potential for advanced real-time health monitoring applications.