At the heart of the electronic device is a "quantum dot" (pictured above), which measures just four-billionths of a metre — so small that it contains just seven atoms, compared to the millions that make up a typical laptop chip.
by Bridie Smith, Technology, Nature Nanotechnology (http://www.theage.com.au/technology/sci-tech/tiny-dot-speeds-hitech-future-20100524-w4bi.html)
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