Scientists maneuver tumbling microbot through live animal colon in remarkable first

In a breakthrough that could help revolutionize medicine, scientists have successfully piloted a tiny, tumbling microbot inside an animal colon for the first time ever.

The miniature machine is only the size of a few human hairs, but it promises to have a massive impact, as it could be used for a raft of medical purposes, including drug delivery and monitoring.

The machine is so small that it can’t even carry a battery, and instead is powered and wirelessly controlled from the outside thanks to the magic of magnetic fields.

The rectangular robot had already proven that it could successfully navigate on dry and wet surfaces, as well as up and down inclines. Its peculiar flipping action was specifically designed to tackle the unpredictable terrain inside an animal’s colon.

“When we apply a rotating external magnetic field to these robots, they rotate just like a car tyre would to go over rough terrain,” explained mechanical engineer David Cappelleri, from Purdue University. “The magnetic field also safely penetrates different types of mediums, which is important for using these robots in the human body.”

The study was carried out on mice who were under anesthetic. The colon was chosen because it has an, ahem, convenient entry point, and also because it’s very messy, making it the ideal testing ground for a microbot.

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