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Stretchable nanogenerator with micro-nano hierarchical interfaces for self-powered biometric authentication
- Source :
- npj Flexible Electronics, Vol 8, Iss 1, Pp 1-10 (2024)
- Publication Year :
- 2024
- Publisher :
- Nature Portfolio, 2024.
-
Abstract
- Abstract Multifunctional integration and heterogeneous surface integration are two crucial challenges in the in-depth use and development of triboelectric nanogenerators (TENGs) in the wearable electronic field. A promising solution is to develop stretchable TENGs (STENG), which have the potential for microenergy supply and self-powered sensing. The key challenge is to endow its functional components with good deformability and realize heterogeneous surface integration. Herein, we proposed a fully stretchable, surface adaptable TENG using stretchable micro-nano hierarchical friction interfaces. It integrated microenenrgy supply and multifunctional self-powered sensing (i.e., bend, force, and frequency sensing) abilities successfully. The highly-linear sensing abilities endows the STENG with a good biometric ability. As an application, a STENG array based-stretchable wearable keyboard was proposed. It identified dynamic keystroke motions of all users with a Support Vector Machine, with a high accuracy of 93.21%. Besides, the intruders who were not sampled were distinguished from users, with an accuracy of 81.50%.
Details
- Language :
- English
- ISSN :
- 23974621
- Volume :
- 8
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- npj Flexible Electronics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.09a954e567884021901c10f21bbcb771
- Document Type :
- article
- Full Text :
- https://doi.org/10.1038/s41528-024-00367-3