Fig. 4: Monitoring electric signals from the human body underwater.
From: Mussel-inspired thermo-switchable underwater adhesive based on a Janus hydrogel
a Underwater adhesion strength–displacement curves of the hydrogel on porcine skin. b Adhesion strength of the hydrogel on porcine skin. c Image of the hydrogel with an embedded carbon electrode on human skin and d ECG monitoring at 40 °C. e Image of a commercial hydrogel electrode on human skin and f ECG monitoring at 40 °C. The electrode detached from the skin after approximately 113 s, and monitoring failed.
