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Researchers have built an inchworm-like robot so small you need a microscope just to see it.

In fact about 200 hundred of them could line up and do the conga across a plain M&M.

The tiny bot measures about 60 micrometers wide (about the width of a human hair) by 250 micrometers long, making it the smallest untethered, controllable microrobot ever.

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15y ago

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