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Mussel-Like Silk Fibroin Hydrogel With Skin Compliance Soft Electrode for Wearable Devices
Yonggen Zhang1, Andeng Liu2,3, Wenzhe Hao1
1Department of Clinical Fundamentals, College of Traditional Chinese Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
Macromolecular Rapid Communications
|January 31, 2025
Summary
Researchers developed a new mussel-inspired hydrogel for soft, wearable electronic devices. This biocompatible epidermal electrode offers improved skin adhesion and accurately records physiological signals for personalized health monitoring.
Area of Science:
- Biomaterials Science
- Wearable Electronics
- Biomedical Engineering
Background:
- Flexible wearable electronics offer convenience for real-time physiological monitoring.
- Challenges for soft electrodes include skin surface complexity, biocompatibility, and modulus mismatch.
Purpose of the Study:
- To develop a novel soft epidermal electrode with enhanced adhesion and biocompatibility.
- To address the limitations of existing soft electrodes for wearable health monitoring.
Main Methods:
- A two-step synthesis process created a mussel-inspired polydopamine-nanoclay-silk fibroin hydrogel (DA-C-SFH).
- The method involved polydopamine oxidation with nanoclay and integration with silk fibroin.
Main Results:
- The synthesized DA-C-SFH hydrogel demonstrated low modulus, high elasticity, and adhesive properties.
- The hydrogel achieved conformal skin adhesion and effectively detected subtle physiological signals like pulse waves.
- It functioned as a soft epidermal electrode, successfully recording electrocardiograms and electromyograms.
Conclusions:
- The DA-C-SFH hydrogel shows significant potential as a soft epidermal electrode for advanced medical electronics.
- This material advances personalized health monitoring through reliable electrophysiological signal acquisition.
