Printable hydrogel enables wearable health sensors that multitask
A team of researchers led by Penn State developed an ultrasoft, adhesive and printable hydrogel — a soft, water-rich material that mimics the flexibility of living tissue — designed to conform to dry, wet, moving and hairy skin. In proof-of-concept experiments, the material simultaneously recorded different combinations of heart, eye, brain and muscle activity, changes in sweating and body movement, demonstrating its potential as a platform for future wearable health-monitoring technologies.