Tim HuttonTim Hutton - 2011-10-31 09:29:17+0000 - Updated: 2011-10-31 09:32:49+0000

Massively Parallel Computer Built From Single Layer of Molecules - Technology Review

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John Baez - 2011-10-31 10:32:04+0000 - Updated: 2011-10-31 10:32:35+0000
"They've laid down 300 DDQ molecules on a gold substrate, setting them up as a cellular automaton. More impressive still, they've then initialised the system so that it "calculates" the way heat diffuses in a conducting medium and the way cancer spreads through tissue."

If they're just getting something to simulate the heat equation - that is, the process whereby something spreads out through the random motion of small objects - that might be very unimpressive.
Tim Hutton - 2011-10-31 10:38:52+0000
I don't understand the details of the paper but they talk about making gliders and logic gates in a similar way to the Billiard Ball Model.
John Baez - 2011-10-31 10:56:09+0000
Okay, it sounds like one should be able to do more exciting things with these than simulate diffusion processes. I can simulate a diffusion process with sugar in a cup of coffee. :-)

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