Nanotechnology: Scientists Create Miniature Machine Parts from DNA

In the latest phase of the nanotechnology revolution, scientists have built a collection of minuscule objects from DNA, including toothed gears, curved tubes, and a wireframe beach ball five millionths of a centimetre in diameter. As well as being able to hold vast amounts of information, DNA is tough and flexible, making it an attractive candidate for use as a nanomaterial. Advances in molecular biology in recent decades have meant that scientists are well equipped to work with DNA and program it to do whatever they want

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