A Tiny Robot Swarm - Fiction No Longer

By Cowen, Robert C. | The Christian Science Monitor, April 7, 2005 | Go to article overview

A Tiny Robot Swarm - Fiction No Longer


Cowen, Robert C., The Christian Science Monitor


The cartoon superheroes were frustrated. They confronted a menacing robot that quickly repaired any damage they inflicted. It was made up of a swarm of microscopic robots - so-called nanobots - that could change its function and shape at will. Suddenly the swarm became fluid and flowed away.

That cartoon scenario may seem entertaining. But the reality is startling. Engineers at the National Aeronautics and Space Administration want to pull off a similar trick. They are testing a robot that they hope to shrink to nanobot size and eventually form what NASA calls "autonomous nanotechnology swarms" (ANTS). The researchers aim to give ANTS enough artificial intelligence to make smart decisions as well as know intuitively when and how to walk and swarm.

NASA invites you to consider the versatility of a nanobot swarm that has "abundant flexibility" to change shape as needed.

Descending through the Martian atmosphere, for example, it could form an aerodynamic shield. On the ground, it could become a snake to slither over difficult terrain. It could grow an antenna to send back data on anything interesting it encounters. It also would heal itself if damaged.

Human bodies replace damaged cells with new ones, notes Steven Curtis, lead researcher for ANTS, a joint project of Goddard Space Flight Center in Greenbelt, Md., and Langley Research Center in Hampton, Va. "In a similar way, undamaged units in a [nanobot] swarm will join together, allowing it to tolerate extensive damage and still carry on its mission," he says. (Sorry superheroes, you won't be able to blow away the real thing, either.)

Prospects like this give vivid meaning to Richard Feynman's 1959 vision of a nanotech world. Units in that world come in 1 to 100 nanometer (billionths of a meter) sizes. It's the world of atoms and molecules and, now, of nanobots. …

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