Stretchable nanogenerator with micro-nano hierarchical interfaces for self-powered biometric authentication

Stretchable nanogenerator with micro-nano hierarchical interfaces for self-powered biometric authentication

Blog Article

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 Sacroiliac Support 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 Sirens distinguished from users, with an accuracy of 81.50%.