Electrically Stable and Reliably Adhered E-Skin for Heart Health Monitoring

Electronic skin (e-skin) has been extensively investigated for its potential application in heart health monitoring, such as screening cardiovascular diseases and evaluating cardiac activity. Nevertheless, the poor electrical stability of traditional metal electrodes and insufficient adhesion of ordinary flexible substrates are primary impediments that hinder its further product marketing in the healthcare field. Herein, we propose a novel integrated e-skin that incorporates embedded stretchable electrodes with high electrical stability (within 20% strain) and a microsucker array with improved adhesion, which facilitates the effective reduction of motion artifact interference. Moreover, a wireless heart health monitoring system based on the e-skin is designed to realize synchronous electrocardiogram (ECG) and ballistocardiogram (BCG) detection by collecting chest epidermal mechano-acoustic signals and vibration-voltage signals. The monitoring results of the same adult volunteer indicate that the ECG and BCG data recorded by this system have good consistency with data from commercial cardiovascular monitoring devices. Furthermore, the ECG and BCG signal monitoring results of different volunteers further validated the potential of this system in cardiovascular disease diagnosis and long-term heart health monitoring.