Âé¶¹´«Ã½

Full throttle

By Jeff Hecht

28 July 2001

A SPEED limit on future computers may be broken thanks to a new breed of
insulating materials that makes microchips work much faster.

Insulating layers of silicon dioxide play a key role in microchips. The
thinner the layers the faster the circuits switch on and off, processing data.
But the downside is that thinner layers let current through, causing unwanted,
corrupting “noise”.

To plug these leaks you need an insulator with a high “dielectric constant”.
Such compounds do exist, but no one’s been able to grow them on chips without
defects.

Now Rodney McKee of the Oak Ridge National Laboratory…

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