Active Stocks
Thu Mar 28 2024 15:59:33
  1. Tata Steel share price
  2. 155.90 2.00%
  1. ICICI Bank share price
  2. 1,095.75 1.08%
  1. HDFC Bank share price
  2. 1,448.20 0.52%
  1. ITC share price
  2. 428.55 0.13%
  1. Power Grid Corporation Of India share price
  2. 277.05 2.21%
Business News/ Industry / Transistor made using single atom may help beat Moore’s Law
BackBack

Transistor made using single atom may help beat Moore’s Law

Transistor made using single atom may help beat Moore’s Law

Tech guru: A file photo of Gordon Moore, after whom the law is named. BloombergPremium

Tech guru: A file photo of Gordon Moore, after whom the law is named. Bloomberg

Scientists have taken a first early step towards escaping the limits of a technological principle called Moore’s Law by creating a working transistor using a single phosphorus atom.

The atom was etched into a silicon bed with gates to control electrical flow and metallic contacts to apply voltage, researchers reported in the journal Nature Nanotechnology. It is the first such device to be precisely positioned using a repeatable technology, they said, and may one day help ease the way towards creation of a so-called quantum computer that would be significantly smaller and faster than existing technology.

Moore’s law states that the number of transistors that can be placed on an integrated circuit doubles every 18 months to two years, and it’s predicted to reach its limit with existing technology in 2020. Cutting the size of a transistor to a single atom may defeat that concept.

Tech guru: A file photo of Gordon Moore, after whom the law is named. Bloomberg

Moore’s Law is named for Gordon Moore, the co-founder of Santa Clara, California-based Intel Corp., the world’s largest chip maker. He first described the phenomenon in a 1965 report that was later cited by others with his name attached to it.

There is a limitation to the latest finding: The atom must be kept at minus 391 degrees Fahrenheit to keep it from migrating out of its channel, the report said. Because of this, the result should be seen as a proof of principle rather than an initial step in a manufacturing process, the researchers said. These results demonstrate that single-atom devices can in principle be built and controlled with atomically thin wires, where the active component represents the ultimate physical limit of Moore’s Law, the researchers wrote in the report. Simmons’s group, which included scientists from the University of Melbourne and from Purdue University in West Lafayette, Indiana, isn’t the first to create a single-atom transistor. Previous efforts, though, came about as the result of chance and carried a significant margin of error, the researchers said.

The New South Wales scientists used a device called a scanning tunnelling microscope to manipulate the atoms on the surface of the crystal in a way that allowed them to precisely pair one up with the electrode needed to control it.

“If you want to make a practical computer in the long term, you need to be able to put lots of individual atoms in, Simmons said in a video supplied by the university." “And there you find that the separation of the atoms is quite critical."

So-called quantum computers would operate by controlling the movement of electrons in an atom. While the latest finding brings science closer to determining whether quantum computing may be successful at a large-scale level, it remains an open question.

Unlock a world of Benefits! From insightful newsletters to real-time stock tracking, breaking news and a personalized newsfeed – it's all here, just a click away! Login Now!

Catch all the Industry News, Banking News and Updates on Live Mint. Download The Mint News App to get Daily Market Updates.
More Less
Published: 20 Feb 2012, 10:12 PM IST
Next Story footLogo
Recommended For You
Switch to the Mint app for fast and personalized news - Get App