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Highly Self-Adhesive and Biodegradable Silk Bioelectronics for All-In-One Imperceptible Long-Term
Seyed Sajjad Mirbakht1,2, Ata Golparvar2,3, Muhammad Umar1,2,4
1Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul, 34956, Türkiye.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 10, 2025
Summary
Researchers developed novel inkjet-patterned, protein-based, skin-like silk bioelectronics (Silk-BioE). These advanced devices offer self-adhesion, breathability, and biodegradability for imperceptible digital healthcare monitoring.
Area of Science:
- Materials Science
- Biomedical Engineering
- Wearable Technology
Background:
- Skin-like bioelectronics enable discreet digital healthcare but often lack key properties.
- Existing solutions struggle with self-adhesivity, breathability, biodegradability, and scalable fabrication.
Purpose of the Study:
- To develop advanced skin-like bioelectronics integrating multiple desirable material features.
- To address limitations of current bioelectronic devices through innovative material design and fabrication.
Main Methods:
- Inkjet-patterning of protein-based silk materials.
- Characterization of material properties including self-adhesivity, breathability, biodegradability, and mechanical stretchability.
- Integration with flexible readout circuitry for biosignal monitoring.
Main Results:
- Developed Silk-BioE with excellent self-adhesivity (300 N m⁻¹), high breathability (1263 g h⁻² m⁻²), and rapid biodegradability (2 days).
- Achieved high elasticity (≈5 kPa modulus, >600% stretchability) for conformal skin contact, even on hairy regions with perspiration.
- Demonstrated non-invasive, real-time monitoring of biosignals (ECG, EEG, EOG) for up to 12 hours, comparable to traditional electrodes.
Conclusions:
- Inkjet-patterned Silk-BioE represent a significant advancement in wearable bioelectronics.
- These devices offer a unique combination of desirable properties for imperceptible and effective digital healthcare.
- Silk-BioE pave the way for next-generation, sustainable, and high-performance skin-like electronic systems.
