Design, Fabrication and Evaluation of a Stretchable High-Density Electromyography Array

Area of Science:

• Biomedical Engineering
• Neuroscience
• Wearable Technology

Background:

• High-density electrode systems for human-machine interfaces (HMIs) face practical limitations in real-world applications.
• Challenges include noise interference, motion artifacts, and the need for compact, user-friendly electrode interfaces.
• Existing systems often require extensive skin preparation, hindering widespread adoption.

Purpose of the Study:

• To introduce a novel wearable and stretchable electromyography (EMG) array designed to overcome current HMI limitations.
• To present the design, fabrication, characterization, and evaluation of this advanced EMG system.
• To assess the potential of the developed prototype for both research and real-world HMI applications.

Main Methods:

• Fabrication of a stretchable EMG array utilizing dry electrodes integrated onto flexible printed circuit board (PCB) substrates.
• Development of a manufacturing process for stretchable sleeves ensuring consistent subject coverage.
• Comprehensive characterization and evaluation of the prototype's performance in simulated and real-world conditions.

Main Results:

• The developed stretchable EMG array effectively eliminates the need for time-consuming skin preparation.
• The system demonstrates consistent and standardized coverage across different subjects.
• Performance evaluation shows the stretchable array matches or surpasses traditional EMG grids in signal quality and usability.

Conclusions:

• The wearable and stretchable EMG array represents a significant advancement in HMI technology.
• This innovation addresses key challenges hindering the real-life adoption of high-density EMG systems.
• The developed technology holds substantial promise for advancing the translation of high-density EMG for practical HMIs.