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Curved Microneedle Array-Based sEMG Electrode for Robust Long-Term Measurements and High Selectivity.
Minjae Kim1, Taewan Kim2, Dong Sung Kim3
1Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea. minjaekim@postech.ac.kr.
Sensors (Basel, Switzerland)
|July 9, 2015
Summary
This study introduces a flexible microneedle electrode for improved surface electromyography (sEMG) measurements. The novel electrode offers robust, long-term, and selective motion detection, even with perspiration.
Area of Science:
- Biomedical Engineering
- Wearable Technology
- Biosignal Measurement
Background:
- Surface electromyography (sEMG) is crucial for inferring human intention but limited by conventional electrode issues.
- Existing electrodes face challenges with long-term use, environmental interference, and perspiration, restricting sEMG applications.
Purpose of the Study:
- To develop and evaluate a flexible band-integrated, curved microneedle array electrode.
- To assess the electrode's performance for robust long-term measurements, high selectivity, and ease of application.
- To investigate signal quality concerning long-term usability and perspiration sensitivity.
Main Methods:
- Fabrication of a flexible band-integrated, curved microneedle array electrode.
- Evaluation of signal quality, long-term usability, and perspiration resistance.
- Assessment of motion-discriminating performance compared to commercial electrodes.
Main Results:
- The proposed microneedle electrode demonstrates robustness against perspiration.
- High-quality measurements were maintained for over 8 hours.
- The electrode exhibited superior motion selectivity compared to commercial wet and dry electrodes.
Conclusions:
- The flexible microneedle array electrode enables robust and selective long-term sEMG measurements.
- This innovation overcomes limitations of conventional electrodes, expanding potential sEMG applications.
- The electrode is suitable for reliable biosignal monitoring in various environments.
