Stretchable bio-potential electrode with self-similar serpentine structure for continuous, long-term, stable ECG...

Area of Science:

• Biomedical Engineering
• Materials Science

Background:

• Stretchable electrodes are crucial for wearable technology in biological signal monitoring, human-machine interfaces (HMI), and the Internet of Things (IoT).
• Existing electrodes often face challenges with long-term stability and maintaining conformal contact with dynamic skin surfaces.

Purpose of the Study:

• To design and validate a novel stretchable bio-potential electrode with a second-order self-similar serpentine structure.
• To achieve continuous, long-term, and stable electrocardiogram (ECG) signal recordings with conformal skin contact.

Main Methods:

• Utilized a second-order self-similar serpentine structure for electrode design.
• Employed Finite Element Method (FEM) simulations and experimental validation.
• Conducted 48-hour continuous ECG signal recording experiments.

Main Results:

• The designed electrode demonstrated over 30% deformability.
• Successfully achieved continuous 48-hour ECG signal recordings.
• Validated the robustness and stability of ECG signals under external strain applied to the body surface.

Conclusions:

• The stretchable bio-potential electrode with a self-similar serpentine structure offers a promising solution for stable, long-term biological signal monitoring.
• This technology has significant potential for integration into advanced biological signal monitoring systems and human-machine interfaces.