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Related Experiment Video

Updated: Jun 28, 2025

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

Published on: November 24, 2016

Adaptively resettable microfluidic patch for sweat rate and electrolytes detection.

Mengyuan Liu¹, Siyuan Liu¹, Tong Zhang¹

¹School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China; i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), 398 Ruoshui Road, Suzhou, Jiangsu, 215123, PR China.

Biosensors & Bioelectronics

|April 18, 2024

Summary

This summary is machine-generated.

This study introduces a novel resettable microfluidic sweat patch for continuous sweat monitoring. The device overcomes limitations in reuse and capacity, enabling practical hydration status assessment.

Keywords:

Microfluidic patch Resettable channel Sweat loss Sweat rate Sweat sensors

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Area of Science:

Biomedical Engineering
Microfluidics
Wearable Technology

Background:

Skin-interfaced microfluidic patches are used for sweat analysis.
Current limitations include difficulty in microchannel reuse and restricted volumetric capacity, hindering practical application.

Purpose of the Study:

To develop an adaptively resettable microfluidic sweat patch (Art-Sweat patch) for continuous sweat rate and ionic charge concentration monitoring.
To enhance the stability and volumetric capacity of microfluidic sweat sensors for practical hydration assessment.

Main Methods:

Developed a platform with combined vertical and horizontal microchannels for repeated sweat filling and emptying.
Integrated adaptive volume variation identification for sensor resetting.
Incorporated self-designed wireless transmission modules for data monitoring.

Main Results:

Demonstrated continuous monitoring of sweat rate (0.2-4.0 μL min⁻¹) and ionic charge concentration (10-200 mmol L⁻¹).
Achieved an enlarged volumetric capacity exceeding 300 μL with enhanced stability.
Showcased product-level wearability and high performance in monitoring regional sweat variations.

Conclusions:

The Art-Sweat patch offers a solution for the reusability and capacity limitations of current sweat sensors.
The device enables accurate and continuous monitoring of sweat biomarkers for effective hydration status assessment.
This technology holds promise for practical applications in wearable health monitoring.