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September 17, 2025Micro and Nano Systems LettersOpen Access

A highly stable and flexible ion-selective patch sensor for real-time sweat Na+ and K+ monitoring

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Authors

DKDong Yun KimMRMd Selim RezaASAhmad Abdus Samad

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Overview

This sensor demonstrates improved stability and accuracy for monitoring Na+ and K+ levels in sweat, indicating its potential in wearable health technologies.

Key Points

  • The sensor achieves near-Nernstian sensitivities of 48.8 mV/decade for Na+ and 50.5 mV/decade for K+, ensuring accurate real-time monitoring.
  • Long-term stability is impressive, with potential drifts of only 0.04 mV/h for Na+ and 0.08 mV/h for K+, highlighting its reliability in practical applications.
  • The integration of laser-induced graphene on MXene matting enhances electrical conductivity and hydrophobicity, reducing potential drift effectively.
  • Utilizing low-cost, scalable fabrication techniques positions this technology for mass production for wearable monitoring solutions.

Cite This Study

Kim et al. (2025) studied this question.

synapsesocial.com/papers/68d4604731b076d99fa5f8a3https://doi.org/10.1186/s40486-025-00235-3
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Multifunctional Siloxene-Decorated Laser-Inscribed Graphene Patch for Sweat Ion Analysis and Electrocardiogram Monitoring2024 · 23 citations
  2. 2Graphene Oxide–Poly(vinyl alcohol) Hydrogel-Coated Solid-Contact Ion-Selective Electrodes for Wearable Sweat Potassium Ion Sensing2024 · 16 citations
  3. 3Wearable Sweat Sodium Ion Biosensor for Personalized Hydration Strategy under Exercise-Induced Heat Stress2026
  4. 4Flexible electrochemical sensors for Na <sup>+</sup> and K <sup>+</sup> monitoring in sweat2026
  5. 5Laser-Scribed Graphene on PDMS for Flexible Wearable Sweat Biosensors with Multiplexed Sensing Capability2026