3D Printed Muscles Cost Less, Lift More

3D Printed Muscles Cost Less, Lift More
Robots may one day be powered by a 3D-printed soft muscle three times stronger than natural muscles.

Developed by a team at Columbia University, the self-contained synthetic muscle is simpler and more affordable to make than conventional options. The muscle’s design is based on natural muscles, with a silicon rubber matrix embedded with micro-scale pockets of ethanol. When a low voltage is applied to the muscle, the ethanol will boil, causing the material to expand up to 900 percent.

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