Bioelectronics as sensors in soft materials. (a) A stretchable and biocompatible ECG
sensor consisting of Ag–Au core–sheath nanowires. The scale bar is 1 cm. Reproduced with
permission from Choi et al., Nat. Nanotechnol. 13(11),
1048–1056 (2018). Copyright 2018 Springer Nature. (b) A self-healing, wearable
electronic skin consisting of carbon nanotubes and polymers. The device can monitor ECG
signals and provide visual feedback using the light emitting capacitor (LEC) display.
Each display pixel represents a specific heart rate range. Reproduced with permission
from Son et al., Nat. Nanotechnol. 13(11), 1057–1065
(2018). Copyright 2018 Springer Nature.