Researchers in Portugal are pioneering the use of gallium–carbon composites for 3D printing sensor-heater-battery systems in wearable electronics. These applications demand flexible, durable materials that maintain their functionality under strain. Gallium-based liquid metals (LMs) are ideal due to their high conductivity and fluidic deformability, but their low viscosity and high surface tension present significant printing challenges.
To address these issues, the team developed a gallium-carbon black-styrene isoprene block copolymer (Ga–CB–SIS) composite. This cost-effective and sustainable material substitutes traditional metals like silver with carbon. The Ga–CB–SIS composite is digitally printable and sinter-free, which eliminates the need for thermal sintering and enables multilayer 3D printing. It also exhibits excellent adhesion to various substrates, including heat-sensitive materials.
Continue reading… “Gallium-Carbon Composites: Revolutionizing 3D Printing for Wearable Electronics”
