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Researchers Create Single-Atom Transistor

by - source: UNSW

A report from the University of New South Wales provides reason to believe that Moore's Law has plenty of time left.

UNSW physicists were able to use a single phosphorus atom as a transistor that was placed between "atomic-scale electrodes and electrostatic control gates". To exactly position atoms on a chip is a critical ability to build quantum computers, the scientists said.

The team used a scanning tunnelling microscope to monitor and move atoms on the surface of a silicon crystal that was put in an ultra-high vacuum chamber. The phosphorus atoms were positioned via a lithography process and then covered with a non-reactive layer of hydrogen. The researchers then removed the hydrogen atoms in specific locations using the microscope tip. The placement of the phosphorus atoms on the silicon surface was achieved via a chemical reaction. The researchers completed the transistor with a silicon layer and "alignment markers" that enabled them to apply an electrical charge.

The researchers said that the "electronic properties of the device were in excellent agreement with theoretical predictions for a single phosphorus atom transistor."

So far, it has not been possible to target a specific location and position an atom in that specific spot. "This device is perfect", said Michelle Simmons, group leader and director of the ARC Centre for Quantum Computation and Communication at UNSW. "This is the first time anyone has shown control of a single atom in a substrate with this level of precise accuracy." Previously scientists hoped that an atom would be present in the location they needed it.

Intel will be rolling out processors built in 22 nm this year. Transistors that reach an atom level are expected to be built in the 2020 time frame.

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memadmax 02/21/2012 11:31 AM
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-8+

Now THIS is something that will really pump up the GFLOPs =D

alhanelem 02/21/2012 11:53 AM
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so whats after this then?
electron transistors?

theuniquegamer 02/21/2012 11:58 AM
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How possible with 1 atom. I think in few 5-10 years a single chip will contain 10s of trillions of transistors.

joytech22 02/21/2012 12:04 PM
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Wow, think about it for a second..
We are building things out of ATOMS.. ATOMS!!

You serious? I mean sure we have carbon nanotubes and stuff but just wow.
And soon computers transistors may even be based on single Atoms?

I think we are advancing pretty damn fast, I mean we took over this planet and affected it in multiple ways, carve parts of it to our liking..

ARGH it's just insane.. >.< Humans are too powerful.

dontknownotsure 02/21/2012 12:48 PM
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joytech22 :
Wow, think about it for a second..We are building things out of ATOMS.. ATOMS!!You serious? I mean sure we have carbon nanotubes and stuff but just wow.And soon computers transistors may even be based on single Atoms?I think we are advancing pretty damn fast, I mean we took over this planet and affected it in multiple ways, carve parts of it to our liking..ARGH it's just insane.. >.< Humans are too powerful.



oh just wait until they decide to play fallout IRL

ojas 02/21/2012 12:51 PM
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joytech22 :
Humans are too powerful.


With great power comes great responsibility... :)

bin1127 02/21/2012 1:05 PM
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So when is apple going to sue for stealing their invention?

back_by_demand 02/21/2012 1:16 PM
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Arthur C Clarke wrote in the book 3001 that the race that invented the Monolith had found a way to store information by manipulating the fabric of space
...
At this rate we won't have to wait a thousand years for that to happen for real

bustapr 02/21/2012 1:19 PM
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thats around 100x smaller than intels trigate transistors. Imagine the speed!

also now that this is possible I fear well hit a wall in tech dev in the next 2 decades.

Anonymous 02/21/2012 1:34 PM
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southernshark 02/21/2012 2:15 PM
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We are just paving the road for our machine overlords to walk on.

marraco 02/21/2012 2:45 PM
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JackFrost860 02/21/2012 2:51 PM
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And what will the rest of the human race do with these quantum computers? Yes, use them to update their Facebook status!

techseven 02/21/2012 3:04 PM
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So it will be Intel Atom 2.0?

back_by_demand 02/21/2012 3:05 PM
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southernshark :
We are just paving the road for our machine overlords to walk on.


I, for one, welcome our new machine overlords

scytherswings 02/21/2012 3:28 PM
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You forgot to mention that it was created with the help of Purdue University and the University of Melbourne....

Boiler Up!

zak_mckraken 02/21/2012 3:52 PM
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southernshark :
We are just paving the road for our machine overlords to walk on.


I too welcome our new machine overlords.

LaHawzel 02/21/2012 4:16 PM
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"The researchers said that the 'electronic properties of the device were in excellent agreement with theoretical predictions for a single phosphorus atom transistor.'"

How good are these theoretical predictions, anyway? Are they better than what can be expected of silicon-based transistors of a larger scale?

alvine 02/21/2012 4:18 PM
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jawaaz :
Hmmm...getting more advanced to make atoms slaves of humans :-P ....Salute to makers of this and if we do enough advances ,we might start using only quarks as processors :-) CEO & Founder @Koenizsegg Corporation!http://www.koenizsegg.co.cc


you are the Christian von Koenigsegg ehh?

sslapikas 02/21/2012 4:57 PM
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This is no news. We already have "Atom" processors. Yours sincerely Mr Sarcasm

fixxxer113 02/21/2012 4:57 PM
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" We did it boys!! We created an atom-scale processor!! We shall call it the Atom Processor...oh wait... AAAAAAARRGH friggin' intel ^#$%&#$ trademarks 38#^$*^$#&!!!!!!"

back_by_demand 02/21/2012 5:24 PM
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fixxxer113 :
" We did it boys!! We created an atom-scale processor!! We shall call it the Atom Processor...oh wait... AAAAAAARRGH friggin' intel ^#$%&#$ trademarks 38#^$*^$#&!!!!!!"


They could always call it the 2.21 Angstrom, doesn't roll off the tongue as easy but at least it's accurate

noblerabbit 02/21/2012 5:44 PM
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bin1127 :
So when is apple going to sue for stealing their invention?



I'm surprised they haven't sued Intel yet for naming their products as "Core" , oh wait, Apple are just Intel clones, nevermind.

noblerabbit 02/21/2012 5:47 PM
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alhanelem :
so whats after this then?electron transistors?



no! Dual and Quad Atoms branded by Intel! Marketing Geniuses will convince the populace that 4 Atoms (already capable of computing any mathematical algorithm instantly) will open email windows faster than ever.

Anonymous 02/21/2012 7:02 PM
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Hitting the wall in terms of scaling down may actually be somewhat beneficial. Then the focus will have to move from making things smaller to making better designs.

freggo 02/21/2012 7:29 PM
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Why use anything with a 'mass' to compute.
Let's just use light waves instead.
We already can add and subtract waves; just need to figure out a few other basic actions next.

wiyosaya 02/21/2012 8:28 PM
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alhanelem :
so whats after this then?electron transistors?


Probably. There are people working on using the spin of an electron to demark state. Sounds like it is not an easy task, though.

There's another version of this article here along with cool video - it makes me think that they might actually be able to introduce these to the market by 2020. Many "breakthroughs" like this seem to never make it to market, but this sounds like it has a real chance of becoming a commercial product.

serendipiti 02/21/2012 11:05 PM
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And now is when you head to the University of New South Wales just to discover an empty building while all the equipment has been taken out by the army :)
The good thing, is that it's process is quite similar to current semiconductors process. I know I am comparing a tunnel effect microscope to laser + masks and the extra high vacuum chamber to immersion lithography... casi nada :)
Also they are building transistors, after all, one of the basic blocks to build CPUs and electronic devices (so it seems that it should be easier to get an intel or amd cpu on atoms transistors). It is possible using the microscope to put an electrical charge to one transistor, but to get a CPU, you need to precisely control both voltage and amperage on all of that hundred trillion transistors on that circuit... and this seems to be a hard job to get done...

mb2bm55 02/21/2012 11:12 PM
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LaHawzel :
"The researchers said that the 'electronic properties of the device were in excellent agreement with theoretical predictions for a single phosphorus atom transistor.'"How good are these theoretical predictions, anyway? Are they better than what can be expected of silicon-based transistors of a larger scale?



Its probably a very accurate theory. Quantum mechanics at the atomic level is perhaps the most accurate theory in all of science. In dealing with only single atoms, there are even fewer factors to muck up the calculations and predictions. its probably easier to predict the behavior than for larger transistors.

mb2bm55 02/21/2012 11:16 PM
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freggo :
Why use anything with a 'mass' to compute.Let's just use light waves instead.We already can add and subtract waves; just need to figure out a few other basic actions next.



It would be nice if the creation and absorption of photons was produced by single or dual atom diodes. It would be difficult for the total mass of the system that manipulates the photons to be less than a system of single atom transistors, but then again that needs support structure too

godmode 02/21/2012 11:42 PM
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southernshark :
We are just paving the road for our machine overlords to walk on.



i welcome the machine overlords over our current politicians -.-


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