A wearable multisensing patch for continuous sweat monitoring

Area of Science:

• Biomedical Engineering
• Wearable Technology
• Analytical Chemistry

Background:

• Continuous, non-invasive biomarker monitoring is crucial for sports, exercise, and healthcare.
• Existing methods often require invasive sampling or lack real-time capabilities.

Purpose of the Study:

• To develop a flexible microfluidic platform for integrated, on-body sweat sensing.
• To enable simultaneous and selective measurement of metabolites, electrolytes, and temperature.

Main Methods:

• Fabrication of a flexible microfluidic channel with integrated microneedle sensors.
• Development of potentiometric sodium, iridium oxide pH, and amperometric lactate sensors.
• Real-time data collection from human subjects during exercise.

Main Results:

• Successful simultaneous measurement of lactate, pH, and sodium in human sweat.
• Demonstrated correlation with saliva measurements for cortisol.
• Real-time data acquisition during cycling and running.

Conclusions:

• A fully integrated, flexible sensor platform for continuous sweat analysis was achieved.
• The system offers wireless data transmission for real-time analytics.
• Potential for advanced human performance and health monitoring.