Gallery: 3D Printed Mechanical Muscle Has a Heartbeat Powered by Yeast


If the Tin Man were looking for a modern heart instead of an oversized pocket watch, it might look a little something like this. Scientists at the University of West England in Bristol have fabricated a 3D-printed pump that that uses the pressure generated by live yeast to beat, turning it into an artificial muscle. The valve is powered by electricity generated by a microbial fuel cell and controls the movement of the membrane. It opens to release pressure generated by the yeast, expands, and then shrinks back to begin another cycle.

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