Originally pure Silicon Valley publications, they are now trying to broaden their base.

ECONOMIST: Publishing: Heavy reading | The

The consortium's technology builds its transistors inside a sliver of pure silicon, laid on top of an insulator, which in turn sits on top of a standard wafer, the substrate on which transistors are constructed.

ECONOMIST: Transistors

At the risk of being too simplistic to make silicon wafers, which is what you use to make computer chips and solar cells, you take a great big ingot of very pure silicon metal and then slice it very thinly.

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That work is still ongoing at MIT, but the pair left, with the idea of using the same silicon micromachining technology to build tiny "reformers" that could separate pure hydrogen from alcohol for fuel cells.

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