Your Next Computer May Be Made of Water
When Andre Geim and Konstantin Novoselov of the University of Manchester developed graphene, it won them this year's Nobel Prize in physics. There were reasons for that. The one atom-thick substance, shaved from crystals, is possibly among the lightest-weight, most conducive and rugged materials on earth.
The avenues of development for the material include help in sequencing DNA and the possible creation of an extraordinary energy storage medium. But how can you make a computer out of the stuff? Just add water.
For those of you without advanced physics degrees, what that means is that you can use water in conjunction with graphene to create an on-off switch, a transistor.. How does a graphene/water transistor work? Take a wafer of graphene and slap it onto one of silicon and silicon dioxide, then send water into the tiny space between the two; the water backs away from the silicon toward the graphene, de-conducting the water, and breaking the connection.
Why is this important? Water is a safe, common element, so when and if the technology takes off, it would need, and create, less toxicity than current transistor technology. And that's nice. What's more compelling to the computing experience is that, in combination with radically extended storage possibilities, the graphene transistor has the potential to make computers tougher, much smaller and much faster than we have now. A device the size of tablet might carry the processing power and memory of a network of computers.
Thursday, October 28, 2010
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