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Molecule-sized switches regularly prompt headlines about a new generation of miniaturized electronic chips. But there's a catch.
Although researchers can shrink individual components of circuits to the nanoscale, they cannot wire them together without conventional connections, which are hundreds of times bigger than the components themselves.
It's akin to joining the latest Pentium chip to your computer with enormous crocodile clips and jump leads. "You lose most of the advantages you had in this very small structure," says Charles Lieber, a chemist from Harvard University, Massachusetts.
Now Lieber reckons he has the answer: a technique that could be used to create ready-wired nanocircuits that do not need cumbersome connections. [continued]
http://www.nature.com/nsu/040628/040628-16.html
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