Liquid metal@lignin-based double layered hydrogel with high stretchable, toughness, adhesion, and conductivity for wearable sensor

Key Points

• This hydrogel demonstrates remarkable conductivity and stretchability, making it suitable for wearable sensors.
• Key measures included tensile strength and adhesion properties, with recorded adhesion values surpassing standard measurements.
• Formulated through a novel combination of liquid metal and lignin materials, the hydrogel exhibits unique capabilities under stress.
• The findings highlight potential applications in flexible electronics, but further exploration in diverse conditions is needed.