High Performance Conductive Composite Hydrogel Interface for Epidermal Electrophysiological Monitoring

Epidermal electrophysiological signals, including ECG, EMG, and EEG, provide valuable health information. Real-time and accurate recording of these signals is vital for clinical diagnosis, monitoring, and therapy. A critical aspect of this process is the seamless integration of electronic devices in direct contact with biological tissues. Herein, we proposed a high-performance conductive composite hydrogel to build an electrical bio-adhesive interface for epidermal electrophysiological monitoring. Such hydrogel allows the facile fabrication of one-step UV crosslinking, which exhibits high stretchability of ~280%, great conformability, exceptional adhesion to skin and other non-biological materials, and stable conductivity. Enabled by these advantageous properties, the prepared hydrogel demonstrates excellent ECG and EMG signal recording capability, providing a new avenue for strategic development and manufacturing of advanced bio-adhesive interfaces for soft bioelectronics, further advancing seamless human-machine integration.