Functional Transistor Is One Atom

Physicists have succeeded in fashioning a working transistor from a single phosphorus atom embedded in a silicon crystal.


(UNSW physicists have created a working transistor
consisting of a single atom placed precisely
in a silicon crystal.)

“Their approach is extremely powerful,” said Andreas Heinrich, a physicist at I.B.M. “This is at least a 10-year effort to make very tiny electrical wires and combine them with the placement of a phosphorus atom exactly where they want them.”

Dr. Heinrich said the research was a significant step toward making a functioning quantum computing system. However, whether quantum computing will ever be harnessed for useful tasks remains uncertain, and the researchers noted that their work demonstrated the fundamental limits that today’s computers would be able to shrink to.

“It shows that Moore’s Law can be scaled toward atomic scales in silicon,” said Gerhard Klimeck, a professor of electrical and computer engineering at Purdue and leader of the project there. Moore’s Law refers to technology improvements by the semiconductor industry that have doubled the number of transistors on a silicon chip roughly every 18 months for the past half-century. That has led to accelerating increases in performance and declining prices. “The technologies for classical computing can survive to the atomic scale,” Dr. Klimeck said.

The scientists placed the single phosphorus atom using a device known as a scanning tunneling microscope. They used it to essentially scrape trenches and a small cavity on a surface of silicon covered with a layer of hydrogen atoms. Phosphine gas was then used to deposit a phosphorus atom at a precise location, which was then encased in further layers of silicon atoms.

The first time I ever heard of this idea was in Robert Heinlein's 1951 novel Between Planets.

"It is theoretically possible to have a matrix in which each individual molecule has a meaning - as they do in the memory cells of your brain. If we had such subtlety, we could wrap your Encyclopedia Britannica into the head of a pin - it would be the head of that pin..."
(Read more about Heinlein's molecule matrix)

Via NYTimes.

Scroll down for more stories in the same category. (Story submitted 2/19/2012)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 4 )

Related News Stories - (" Computer ")

Razer Project Valerie Laptop Unfurls
'A paper thin polycarbon screen unfurled silently...' - William Gibson, 1986.

Google Home Continues Implementation Of Pohl's Joymaker
'It is a transponder connecting you with the central computing facilities of the city in which you reside on a shared-time, self-programming basis.' - Frederik Pohl, 1966.

New Startup 'Improbable' To Model Our World
'A machine able literally to contain the Universe Itself...' - Stanislaw Lem, 1965.

Tricking Cells Into Making Silicon Chips
'Fabricated by genetically engineered metal affinity bacteria...' - Marvel, 1984.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Matrix Sentinel Ancestor, The Pipe Inspector Robot From Krakow
Watch out, Keanu!

Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...'

Robotic Physician Assistant Has Steady 'Hands'
'You turned the screws below and the prongs moved... with caliper slowness, minuteness and precision.'

Roboy 3DPrinted Humanoid Robot
'A robot child that would be reared within the bosom of a human family...'

Robird Flapping Wing Drones Keep Airports Safe
'Mitch heard a rasping, flacketing buzz, like a big insect...'

3D Printed Fashion - Plastirobes And Transdresses
'... dial a new fashion every day!'

Robotic Lawn Mower Powered By Sun, Arduino
'The mower reached the edge of the lawn, clucked to itself like a contented hen...'

Google Perfects 'Blade Runner-style' Photo Details
'Pull back... stop... enhance 57-19...'

Pokerbot Libratus Learns To Lie (Bluff)
'Lying's a vital part of your psychological defense system - you're naked without it!'

Otto Autonomous Robot Trucks Run Into... Legal Snag
'They were automatic trucks such as are used for making deliveries...'

Tiny Drones With Sticky Feet Pollinate Flowers Now
'The Scarab rubbed its hind legs together...'

ThreeForm 3D Scans And Digitally Simulates Customer Fashion
'...A miracle of misapplied engineering caused his own face to appear on the illustrated figures dressed in trooper red.'

CloudFisher - Moroccan Fog Farmers Harvest Moisture From The Air
'That moisture trickles down...'

Piaggio Gita Personal Robot Porter
'Carry his bag... and follow him faithfully...'

Ardu McDuino, Bagpipe Robot
'Rollo sat at the keyboard, prim, inhuman, rigid, twin lenses focused...'

Not Quite Self-Replicating Robots, Franka Emika
'... it shares with mankind the ability to propagate.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.