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MIT Engineers Design Tiny Batteries for Powering Cell-Sized Robots

Could help minuscule robots sense and respond to their environment

Anne Trafton
Tue, 09/03/2024 - 12:00
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(MIT: Cambridge, MA) -- A tiny battery designed by MIT engineers could enable the deployment of cell-sized, autonomous robots for drug delivery within the human body, as well as other applications such as locating leaks in gas pipelines.

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The new battery, which is 0.1 mm long and 0.002 mm thick—roughly the thickness of a human hair—can capture oxygen from air and use it to oxidize zinc, creating a current with a potential of up to 1 volt. That’s enough to power a small circuit, sensor, or actuator, the researchers showed.

“We think this is going to be very enabling for robotics,” says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT and the senior author of the study. “We’re building robotic functions onto the battery and starting to put these components together into devices.”

Ge Zhang, Ph.D. ’22, and Sungyun Yang, an MIT graduate student, are the lead authors of the paper, which appears in Science Robotics.

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