Navigation Links
Down to the wire: Silicon links shrink to atomic scale
Date:1/5/2012

  • The narrowest conducting wires in silicon ever produced are shown to have the same electrical current carrying capability as copper, as published in Science.
  • This means electrical interconnects in silicon can be shrunk to the atomic-scale without losing their functionality Ohm's law holds true at the atomic-scale.
  • UNSW researchers will use these wires to address individual atoms a key step in realising a scalable quantum computer.

The narrowest conducting wires in silicon ever made just four atoms wide and one atom tall have been shown to have the same electrical current carrying capability of copper, according to a new study published today in the journal Science.

Despite their astonishingly tiny diameter 10,000 times thinner than a human hair these wires have exceptionally good electrical properties, raising hopes they will serve to connect atomic-scale components in the quantum computers of tomorrow.

"Interconnecting wiring of this scale will be vital for the development of future atomic-scale electronic circuits," says the lead author of the study, Bent Weber, a PhD student in the ARC Centre of Excellence for Quantum Computation and Communication Technology at the University of New South Wales, in Sydney, Australia.

The wires were made by precisely placing chains of phosphorus atoms within a silicon crystal, according to the study, which includes researchers from the University of Melbourne and Purdue University in the US.

The researchers discovered that the electrical resistivity of their wires a measure of the ease with which electrical current can flow does not depend on the wire width. Their behaviour is described by Ohm's law, which is a fundamental law of physics taught to every high school student.

"It is extraordinary to show that such a basic law still holds even when constructing a wire from the fundamental building blocks of nature atoms," says Weber.

The discovery demonstrates that electrical interconnects in silicon can shrink to atomic dimensions without loss of functionality, says the Centre's Director and leader of the research, Professor Michelle Simmons.

"Driven by the semiconductor industry, computer chip components continuously shrink in size allowing ever smaller and more powerful computers," Simmons says.

"Over the past 50 years this paradigm has established the microelectronics industry as one of the key drivers for global economic growth. A major focus of the Centre of Excellence at UNSW is to push this technology to the next level to develop a silicon-based quantum computer, where single atoms serve as the individual units of computation," she says.

"It will come down to the wire. We are on the threshold of making transistors out of individual atoms. But to build a practical quantum computer we have recognised that the interconnecting wiring and circuitry also needs to shrink to the atomic scale."

Creating such tiny components has been made possible using a technique called scanning tunnelling microscopy. "This technique not only allows us to image individual atoms but also to manipulate them and place them in position," says Weber.


'/>"/>
Contact: Michelle Simmons
michelle.simmons@unsw.edu.au
61-042-533-6756
University of New South Wales
Source:Eurekalert

Related biology technology :

1. Researching graphene nanoelectronics for a post-silicon world
2. Controlling silicon evaporation allows scientists to boost graphene quality
3. Post-silicon computing
4. Microban Medical Silver Antimicrobial Technologies for HCR Silicone Achieve 5 Log Reductions in Bacteria Growth and Prevent Biofilm Formation
5. New nanoscale parameter by Aalto University resolves dilemmas on silicon property
6. UCL grows first telecommunications wavelength quantum dot laser on a silicon substrate
7. SuperNova Diagnostics® Selected to Present at Launch: Silicon Valley 2011
8. Swiss cheese design enables thin film silicon solar cells with potential for higher efficiencies
9. NRL scientists achieve high temperature milestone in silicon spintronics
10. Engineers create vibrant colors in vertical silicon nanowires
11. Engineers grow nanolasers on silicon, pave way for on-chip photonics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/11/2017)... BALTIMORE, Md. (PRWEB) , ... October 11, 2017 ... ... for digital pathology, announced today it will be hosting a Webinar titled, “Pathology ... of  Advanced Pathology Associates , on digital pathology adoption best practices and how ...
(Date:10/11/2017)... ... October 11, 2017 , ... Singh Biotechnology ... drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator of Transcription ... is able to cross the cell membrane and bind intracellular STAT3 and inhibit ...
(Date:10/10/2017)... Oct. 10, 2017 International research firm Parks Associates ... speak at the TMA 2017 Annual Meeting , October 11 in ... the residential home security market and how smart safety and security products ... Parks Associates: Smart ... "The residential security market ...
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer ... first quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With ... with the challenge of how to continue to feed a growing nation. At the ...
Breaking Biology Technology:
(Date:5/16/2017)... DALLAS , May 16, 2017   ... for health organizations, and MD EMR Systems ... certified development partner for GE, have established a ... Patient Portal product and the GE Centricity™ products, ... Centricity EMR. These new integrations ...
(Date:4/17/2017)... , April 17, 2017 NXT-ID, Inc. (NASDAQ: ... announces the filing of its 2016 Annual Report on Form 10-K ... Commission. ... 10-K is available in the Investor Relations section of the Company,s ... the SEC,s website at http://www.sec.gov . 2016 Year ...
(Date:4/11/2017)... No two people are believed to ... York University Tandon School of Engineering and Michigan ... partial similarities between prints are common enough that ... and other electronic devices can be more vulnerable ... in the fact that fingerprint-based authentication systems feature ...
Breaking Biology News(10 mins):