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  1. Home
  3. An Energy Autonomous Microneedle Array-based Sensing System For Continuous Biomarker Monitoring.
  1. Home
  3. An Energy Autonomous Microneedle Array-based Sensing System For Continuous Biomarker Monitoring.

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An Energy Autonomous Microneedle Array-Based Sensing System for Continuous Biomarker Monitoring.

Arnab Pal1, Kai-Po Fan1,2, Sheng-Chun Hung1

  • 1Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|May 22, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

This study presents a wearable microneedle biosensor for continuous, real-time monitoring of key health biomarkers like glucose and electrolytes during exercise. It is energy-autonomous, offering a breakthrough for personalized healthcare and remote patient monitoring.

Keywords:
hybrid power generationinternet of things (IoT)interstitial fluidmicroneedle sensorswearable biosensors

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Area of Science:

  • Biomedical Engineering
  • Wearable Technology
  • Biosensing

Background:

  • Wearable bioelectronics enable personalized healthcare through continuous monitoring.
  • Current platforms face challenges in multi-biomarker detection and energy autonomy.

Purpose of the Study:

  • To develop a wearable, minimally invasive microneedle array platform for real-time monitoring of multiple biomarkers during exercise.
  • To create an energy-autonomous system for continuous data collection.

Main Methods:

  • Utilized stainless-steel microneedles (SS-MNs) with ion-selective membranes and a glucose-sensing layer for simultaneous detection of Na+, K+, Ca2+, pH, and glucose in interstitial fluid (ISF).
  • Integrated a hybrid power generation system (HPGS) combining a triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG) for energy autonomy.
  • Conducted material characterization and in vitro electrochemical tests for sensitivity and selectivity assessments.

    • Main Results:

    • Demonstrated accurate, simultaneous detection of multiple biomarkers in interstitial fluid.
    • Validated the energy-autonomous functionality of the hybrid power generation system.
    • Confirmed the platform's ability to continuously track biomarker levels during on-body trials and daily activities.

    Conclusions:

    • The developed microneedle array-based biosensing system (MABS) offers a significant advancement in wearable biosensing.
    • This minimally invasive, energy-autonomous platform holds potential for personalized medicine, chronic disease management, and telemedicine.