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[Nature] Nanoscale wires defy quantum predictions

post #1 of 22
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Evidence suggests Moore's Law could apply down past 5nm tech.
Quote:
Michelle Simmons, a physicist and director of the Centre for Quantum Computation and Communication Technology at the University of New South Wales in Sydney, Australia, and her colleagues made atomic-scale wires by covering a silicon crystal with a layer of hydrogen atoms and then carving out several-nanometre-wide channels in the hydrogen using the tip of a scanning tunnelling microscope. They absorbed phosphorous atoms onto the exposed silicon and after heating covered the whole thing with crystalline silicon, creating wires of phosphorous-doped silicon in which the phosphorous provided the extra electrons needed to generate a current...

The width of the wires varied from 1.5 to 11 nanometres, but the researchers found that the resistivity did not differ substantially. This, they say, shows that the wires still obey Ohm’s law of classical electronics, which implies that resistivity should not change with sample size...

Simmons points out that her team's approach could not be used alongside current techniques for mass-producing computer chips, which involve printing entire circuits onto silicon wafers rather than painstakingly drawing out individual components. But, she says, the group's work is important because it shows that there are no fundamental electrical limits to making wires in silicon down to the atomic scale.

Ferry agrees that the work has significant implications for the microchip industry. “Before this paper there was perhaps one more generation of microchips, whereas now there might be two or three generations,” he says. He adds that it may be possible to reduce component lengths to as small as 5 nanometres...

Ferry doesn’t think that the low resistivity of the wires is in itself the crucial point. What matters, he says, is that the wires exhibit classical rather than quantum behaviour. “When you have quantum coherence the transistor doesn’t turn on and off like you expect it to,” he explains, “and if the transistor doesn’t work like it ought to then Moore’s law is ended.”

Source

Get to work Intel, if AMD isn't pushing you then Moore's ghost definitely will. I want me some 1.5 nm technology.
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post #2 of 22
eh forget intel ever getting to use that technology. Apple will patent it soon im sure
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post #3 of 22
I agree with one of the people in the article, this is a really nice/cool science experiement, but I don't see a real advancement in chip design due to it...
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post #4 of 22
Quote:
Originally Posted by b3machi7ke View Post

I agree with one of the people in the article, this is a really nice/cool science experiement, but I don't see a real advancement in chip design due to it...

It wasn't meant to be a test to prove that you could decrease chip size even further, they even state that it can't be applied to modern processor technology due to the way the circuits are printed rather than hand picking the samples like they do in the experiment.

It does provide proof that if we can reach to that small scale by using some sort of tech to mass produce that the theory will hold up.
 
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post #5 of 22
Quote:
Originally Posted by nmdehaan 

Get to work Intel, if AMD isn't pushing you then Moore's ghost definitely will. I want me some 1.5 nm technology.

Gordon Moore is still alive tongue.gif
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post #6 of 22
Resistence does not change.... but does the rate of electromigration increase?
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post #7 of 22
Don't they already have plans for 2015 iii-v, 2017 and 2019+ with those nanowires already?
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post #8 of 22
Quote:
Originally Posted by czin125 View Post

Don't they already have plans for 2015 iii-v, 2017 and 2019+ with those nanowires already?

I do not believe Intel does not have sub-10nm on any public roadmaps....

Besides, this was done via an etching process not by a lithographic process.
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post #9 of 22
Speaking of Quantum computing...

It sounds fantastic. A quantum chip can be a 0 and a 1 at the same time (rather than being a 0 OR a 1, I'm guessing that's why the transistor doesn't turn on and off?) resulting in a metric ton of processing power. A few hundred quantum chips can be more powerful than a traditional CPU the size of the universe.
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post #10 of 22
Quote:
Originally Posted by czin125 View Post

Don't they already have plans for 2015 iii-v, 2017 and 2019+ with those nanowires already?

They're researching it. The most advanced node currently being worked on seems to be 10nm via perusing Linkedin profiles. They seem to be incorporating some 3D stacking as well.
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