Silk fibroin-based bioelectronic devices for high-sensitivity, stable, and prolonged in vivo recording
Abstract
Silk fibroin, recognized for its biocompatibility and modifiable properties, has significant potential in bioelectronics. Traditional silk bioelectronic devices, however, face rapid functional losses in aqueous or in vivo environments due to high water absorption of silk fibroin, which leads to expansion, structural damage, and conductive failure. In this study, we developed a novel approach by creating oriented crystallization (OC) silk fibroin through physical modification of the silk protein. This advancement enabled the fabrication of electronic interfaces for chronic biopotential recording. A pre-stretching treatment of the silk membrane allowed for tunable molecular orientation and crystallization, markedly enhancing its aqueous stability, biocompatibility, and electronic shielding capabilities. The OC devices demonstrated robust performance in sensitive detection and motion tracking of cutaneous electrical signals, long-term (over seven days) electromyographic signal acquisition in live mice with high signal-to-noise ratio (SNR >20), and accurate detection of high-frequency oscillations (HFO) in epileptic models (200-500 Hz). This work not only improves the structural and functional integrity of silk fibroin but also extends its application in durable bioelectronics and interfaces suited for long-term physiological environments.
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- Authors
- Yang, H., Zhu, Z., Ni, S., Wang, X., Nie, Y., Tao, C., Zou, D., Jiang, W., Zhao, Y., Zhou, Z., Sun, L., Li, M., Tao, T. H., Liu, K., & Wei, X.
- Affiliations
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- Corresponding author
- Li, Meng
- Tao, Tiger H.
- Liu, Keyin
- Wei, Xiaoling
- ORCID
- Venue
- Biosensors and Bioelectronics
- Publisher
- Elsevier BV
- Published
- 2025-01
- Volume
- 267
- Pages
- 116853
- ISSN
- 0956-5663 (ISSN-L)
- OpenAlex
- W4403499873
- Cited by
- 24
- References
- 48
- Citations by year
- 2026: 13 · 2025: 11
- FWCI
- 2.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Biosensors and Bioelectronics (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province (20212ABC03W07, 20201ZDE04013, 2021B0909050004, 2021B0909060002)
- Chinese Academy of Sciences, Shanghai Branch (JCYJ-SHFY-202201)
- Science and Technology Commission of Shanghai Municipality (2021SHZDZX)
- National Natural Science Foundation of China (61974154, 32371083, 62474182)
- Innovative Research Team of High-level Local University in Shanghai
- Ministry of Science and Technology of the People's Republic of China
- Youth Innovation Promotion Association of the Chinese Academy of Sciences (2021231)
- Chinese Academy of Sciences (Y2023070, ZDBS-LY-JSC024)
- National Key Research and Development Program of China (2019YFA0905200)
- Shanghai Rising-Star Program (22QA1410900)
- Topics
- Physical Sciences › Materials Science › Biomaterials › Silk-based biomaterials and applications
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Keywords
- silk fibroin, oriented crystallization, bioelectronic devices, electromyography, high-frequency oscillations, epilepsy, aqueous stability, pre-stretching, molecular orientation, biocompatibility, electronic shielding, motion tracking, in vivo recording
- MeSH terms
- Animals, Biocompatible Materials, Equipment Design, Fibroins, Bombyx, Biosensing Techniques, Mice, Signal-To-Noise Ratio
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