| 초록 |
Wearable bioelectronics requires elastoplasticity due to the anomalous deformation of fabrics from body motions. Especially, the weavable fabric-type electrode should inhere both toughness and stretchability. To this end, the bimodal phenolic amino acid of the silk fibroin electrode is engineered to crosslink the semi-crystalline domains and dissipate the applied loads. Raman studies validate that the stress dissipative network is constructed when tyrosine is exposed near the amorphous strands. Notably, the tyrosine crosslink upregulates toughness 12.5-times, leading to elastoplastic behavior. Furthermore, the super-elastoplastic core-shell fabric with 750 MJ m-3 toughness, 350% stretchability is implemented due to the effective stress dissipation from the core silk fibroin electrode. The silk bioelectronics is proposed as a wearable personal trainer, assisting the workouts by suppressing muscular fatigues and injuries. |
