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High-Conductive Stretchable Electrode Array Patch for Real-Time High-Fidelity Electromyography Monitoring.

Yao Fu1, Xiang Song1, Xiaoli Zhao1

  • 1Center for State Key Laboratory of Integrated Optoelectronics, and Key Lab of UV-Emitting Materials and Technology of Ministry of Education, College of Physics, Northeast Normal University, Changchun, China.

Small (Weinheim an Der Bergstrasse, Germany)
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Summary
This summary is machine-generated.

Researchers developed a stretchable microelectrode array patch (MEAP-S) for high-quality surface electromyography (sEMG) signals. This new device offers superior conductivity, stretchability, and low crosstalk for advanced neuromuscular interfaces and health monitoring.

Keywords:
high‐density bioelectronicshigh‐fidelity signal acquisitionstretchable microelectrode array patch (MEAP‐S)surface electromyography (sEMG)

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Neuroscience

Background:

  • Surface electromyography (sEMG) signal acquisition demands advanced electrode arrays.
  • Existing systems struggle to combine high conductivity, mechanical robustness, and low crosstalk.
  • Need for improved wearable technology for neuromuscular interfaces and health monitoring.

Purpose of the Study:

  • To develop a novel multilayer stretchable microelectrode array patch (MEAP-S).
  • To achieve high conductivity, stretchability, and channel density while minimizing crosstalk.
  • To evaluate the performance and biocompatibility of MEAP-S for sEMG applications.

Main Methods:

  • Fabrication of MEAP-S using photolithography with gold microelectrodes and SEBS dielectric layers.
  • Characterization of electrical conductivity, mechanical stretchability (up to 100%), and channel density (100 channels cm⁻²).
  • Performance evaluation through signal-to-noise ratio measurements under strain and long-term wear, and human studies for comfort and biocompatibility.

Main Results:

  • MEAP-S demonstrated high conductivity (> 10⁵ S m⁻¹) and 100% stretchability.
  • Achieved high channel density with effective suppression of inter-channel interference.
  • Stable, noise-robust sEMG signals with SNR > 27 dB under strain and during wear.
  • Human studies confirmed superior comfort and biocompatibility compared to Ag/AgCl electrodes.
  • Accurate decoding of complex hand gestures from high-density sEMG maps.

Conclusions:

  • MEAP-S is a scalable and versatile platform for next-generation neuromuscular interfaces.
  • The device enables reliable sEMG acquisition for continuous health monitoring.
  • MEAP-S shows significant potential for advanced human-machine interaction applications.