fig8

Figure 8. Biodegradable materials and sensor device for soft electronics. (A) Circular diagram of biodegradable materials for realizing a health monitoring device. Reproduced with permission from ref^[74]. Copyright 2020, American Chemical Society; (B) Fabrication diagram of a NiSe₂/Cellulose paper-based breath sensor; (C) Breath pattern monitoring by the NiSe₂/Cellulose paper-based breath sensor. Reproduced with permission from ref^[75]. Copyright 2019, American Chemical Society; (D) Image of a biodegradable pressure sensor, which was fabricated by SF hydrogels and SF/PVA hybrid films; (E) Electrical properties of the biodegradable SF-based pressure sensor; (F) SF-based e-skin with 64 pixels for mapping the pressure distribution; (G) Pressure distribution using the SF-based e-skin; (H) Exploded view of a transient n-channel MOSFET array on a biodegradable Fe foil. Reproduced with permission from ref^[76]. Copyright 2022, American Chemical Society; (I) Measured dissolution kinetics of metal foils in pH 7.4 PBS at 37 °C (left). Line scan profiles of Mo thickness changes (right). Reproduced with permission from ref^[80]. Copyright 2015, John Wiley and Sons. SF: Silk fibroin; PVA: polyvinyl alcohol; MOSFET: metal-oxide-semiconductor field effect transistor; PBS: phosphate-buffered saline.