Transient Epidermal Electronic And Optoelectronic Devices For Multidimensional Physiological Monitoring

We report a flexible epidermal transient electronic system, including electrodes, electronics and optoelectronics designed to be worn on the skin, by utilizing silk/glycerol blended films (SGBFs). The glycerol-induced plasticization regulates the mechanical properties and thermostability of silk fibroin to be more suitable for high-temperature fabrication and malleable epidermal applications. Featuring environmental friendly and degradable after usage, a triggered transient process is designed with the SGBFs in the presence of water molecular displacement. As a proof of concept, a wearable silk/glycerol-based electrode (SGBE) and a silk/glycerol-based optoelectronic monitor (SGBOM) are built for multidimensional physiological monitoring (including skin electrode and skin liquid monitor). This study addresses the seamless confluence of biomaterial and epidermal devices, which will pave the way for the harmonized integration of electronics/optics into human.