Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > ORNL finding could help electronics industry enter new phase

Abstract:
Electronic devices of the future could be smaller, faster, more powerful and consume less energy because of a discovery by researchers at the Department of Energy's Oak Ridge National Laboratory

ORNL finding could help electronics industry enter new phase

Oak Ridge, TN | Posted on June 25th, 2009

The key to the finding, published in Science, involves a method to measure intrinsic conducting properties of ferroelectric materials, which for decades have held tremendous promise but have eluded experimental proof. Now, however, ORNL Wigner Fellow Peter Maksymovych and co-authors Stephen Jesse, Art Baddorf and Sergei Kalinin at the Center for Nanophase Materials Sciences believe they may be on a path that will see barriers tumble.

"For years, the challenge has been to develop a nanoscale material that can act as a switch to store binary information," Maksymovych said. "We are excited by our discovery and the prospect of finally being able to exploit the long-conjectured bi-stable electrical conductivity of ferroelectric materials.

"Harnessing this functionality will ultimately enable smart and ultra-dense memory technology."

In the paper, the authors have demonstrated for the first time a giant intrinsic electroresistance in conventional ferroelectric films, where flipping of the spontaneous polarization increased conductance by up to 50,000 percent. Ferroelectric materials can retain their electrostatic polarization and are used for piezoactuators, memory devices and RFID (radio-frequency identification) cards.

"It is as if we open a tiny door in the polar surface for electrons to enter," Maksymovych said. "The size of this door is less than one-millionth of an inch, and it is very likely taking only one-billionth of a second to open."

As the paper illustrates, the key distinction of ferroelectric memory switches is that they can be tuned through thermodynamic properties of ferroelectrics.

"Among other benefits, we can use the tunability to minimize the power needed for recording and reading information and read-write voltages, a key requirement for any viable memory technology," Kalinin said.

Numerous previous works have demonstrated defect-mediated memory, but defects cannot easily be predicted, controlled, analyzed or reduced in size, Maksymovych said. Ferroelectric switching, however, surpasses all of these limitations and will offer unprecedented functionality. The authors believe that using phase transitions such as ferroelectric switching to implement memory and computing is the real fundamental distinction of future information technologies.

Making this research possible is a one-of-a-kind instrument that can simultaneously measure conducting and polar properties of oxide materials with nanometer-scale spatial resolution under a controlled vacuum environment. The instrument was developed and built by Baddorf and colleagues at the Center for Nanophase Materials Sciences. The materials used for this study were grown and provided by collaborators at the University of California at Berkeley.

A link to the paper, "Polarization control of electron tunneling into ferroelectric surfaces," is available here: www.sciencemag.org/cgi/content/abstract/324/5933/1421; Vol. 324, 2009, page 1421. This research was funded by the Office of Basic Energy Sciences within the Department of Energy's Office of Science. UT-Battelle manages Oak Ridge National Laboratory for DOE.

####

About ORNL
The Center for Nanophase Materials Sciences at Oak Ridge National Laboratory is one of the five DOE Nanoscale Science Research Centers, premier national user facilities for interdisciplinary research at the nanoscale. Together the centers comprise a suite of complementary facilities that provide researchers with state-of-the-art capabilities to fabricate, process, characterize and model nanoscale materials, and constitute the largest infrastructure investment of the National Nanotechnology Initiative. The centers are located at DOE's Argonne, Brookhaven, Lawrence Berkeley, Oak Ridge, Sandia and Los Alamos national laboratories. For more information about the DOE Nanoscale Science Research Centers, please visit nano.energy.gov.

For more information, please click here

Contacts:
Media Contact: Ron Walli
Communications and External Relations
865.576.0226

Copyright © Oak Ridge National Laboratory

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Possible Futures

Doubling down on Schrödinger's cat May 27th, 2016

Harnessing solar and wind energy in one device could power the 'Internet of Things' May 26th, 2016

Thermal modification of wood and a complex study of its properties by magnetic resonance May 26th, 2016

Finding a new formula for concrete: Researchers look to bones and shells as blueprints for stronger, more durable concrete May 26th, 2016

Memory Technology

Hybrid nanoantennas -- next-generation platform for ultradense data recording April 28th, 2016

Magnetic vortices defy temperature fluctuations: Common magnetic mineral is reliable witness to Earth's history April 19th, 2016

A single-atom magnet breaks new ground for future data storage April 15th, 2016

Ames Laboratory physicists discover new material that may speed computing April 12th, 2016

Nanoelectronics

Researchers demonstrate size quantization of Dirac fermions in graphene: Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices May 20th, 2016

Graphene: A quantum of current - When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene May 20th, 2016

New type of graphene-based transistor will increase the clock speed of processors: Scientists have developed a new type of graphene-based transistor and using modeling they have demonstrated that it has ultralow power consumption compared with other similar transistor devices May 19th, 2016

Self-healing, flexible electronic material restores functions after many breaks May 17th, 2016

Announcements

Scientists illuminate a hidden regulator in gene transcription: New super-resolution technique visualizes important role of short-lived enzyme clusters May 27th, 2016

Doubling down on Schrödinger's cat May 27th, 2016

Finding a new formula for concrete: Researchers look to bones and shells as blueprints for stronger, more durable concrete May 26th, 2016

Deep Space Industries and SFL selected to provide satellites for HawkEye 360’s Pathfinder mission: The privately-funded space-based global wireless signal monitoring system will be developed by Deep Space Industries and UTIAS Space Flight Laboratory May 26th, 2016

Tools

Scientists illuminate a hidden regulator in gene transcription: New super-resolution technique visualizes important role of short-lived enzyme clusters May 27th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

More light on cancer: Scientists created nanoparticles to highlight cancer cells May 21st, 2016

Nanotubes are beacons in cancer-imaging technique: Rice University researchers use spectral triangulation to pinpoint location of tumors May 21st, 2016

Energy

Harnessing solar and wind energy in one device could power the 'Internet of Things' May 26th, 2016

Gigantic ultrafast spin currents: Scientists from TU Wien (Vienna) are proposing a new method for creating extremely strong spin currents. They are essential for spintronics, a technology that could replace today's electronics May 25th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Technique improves the efficacy of fuel cells: Research demonstrates a new phase transition from metal to ionic conductor May 18th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic