14 May 2010, JellyBean @ 4:12 pm

Scientists announced they had created a molecular robot made out of DNA that walks like a spider along a track made out of the chemical code for life.

The achievement, reported in the British journal Nature, is a further step in nanoscale experiments that, one day, may lead to robot armies to clean arteries and fix damaged tissues.

The robot is just four nanometres – four billionths of a metre – in diameter.

Spider-like nanobot

Milan Stojanovic of New York’s Columbia University, who led the venture, likens the nanobot to “a four-legged spider.”

The beast moves along a track comprising stitched-together strands of DNA that is essentially a pre-programmed course, in the same way that industrial robots move along an assembly line.

The track exploits one of the basic characteristics of DNA. A double-helix molecule, DNA comprises four chemicals which pair in rungs.

Read more:

Cosmos Magazine

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