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A Wearable Microfluidic Sensing Patch for Dynamic Sweat Secretion Analysis.

Hnin Yin Yin Nyein1, Li-Chia Tai1, Quynh Phuong Ngo1

  • 1Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.

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|May 10, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a flexible microfluidic sweat sensing patch for real-time health monitoring. The device accurately measures sweat rate and ion concentrations, advancing wearable diagnostics.

Keywords:
electrochemical sensorflexible electronicsmicrofluidic devicemultiplexed sensingsweat patchwearable biosensors

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Area of Science:

  • Biomedical Engineering
  • Wearable Technology
  • Microfluidics

Background:

  • Wearable sweat sensing is crucial for health and fitness applications.
  • Current challenges include accurate sweat rate monitoring and sweat sampling for dynamic studies.

Purpose of the Study:

  • To develop a flexible microfluidic sweat sensing patch for enhanced real-time electrochemical sensing and sweat rate analysis.
  • To provide an integrated platform for comprehensive sweat secretion analysis.

Main Methods:

  • A flexible microfluidic device with ion-selective sensors and an electrical impedance-based sweat rate sensor on a plastic substrate.
  • On-site signal conditioning, analysis, and transmission via a printed circuit board.
  • Validation using theoretical simulation, syringe pump, and Macroduct sweat collector.

Main Results:

  • Demonstrated progressive sweat flow enhancing sampling and electrochemical detection.
  • Validated sweat rate sensor accuracy and precision.
  • Achieved on-body simultaneous monitoring of ion concentrations (H+, Na+, K+, Cl-) and sweat rate.

Conclusions:

  • The developed sweat sensing patch offers an integrated platform for sweat analysis.
  • Facilitates physiological and clinical investigations by monitoring interrelated sweat parameters.
  • Advances wearable diagnostics for health and fitness applications.