Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > CWRU engineering researchers report nanoscale energy-efficient switching devices at IEDM 2013

This image shows the Case Western Reserve measurement apparatus for studying the SiC NEMS logic building blocks. Insets: (a) An illustration of the basic device structure. (b) A circuit diagram for device testing. (c) Representative measured data of abrupt and non-leakage switching characteristics. (d) Recorded long cycles of robust switching in ambient air.

Credit: Image credit: Philip Feng / Case Western Reserve Univeristy
This image shows the Case Western Reserve measurement apparatus for studying the SiC NEMS logic building blocks. Insets: (a) An illustration of the basic device structure. (b) A circuit diagram for device testing. (c) Representative measured data of abrupt and non-leakage switching characteristics. (d) Recorded long cycles of robust switching in ambient air.

Credit: Image credit: Philip Feng / Case Western Reserve Univeristy

Abstract:
By relentlessly miniaturizing a pre-World War II computer technology, and combining this with a new and durable material, researchers at Case Western Reserve University have built nanoscale switches and logic gates that operate more energy-efficiently than those now used by the billions in computers, tablets and smart phones.

CWRU engineering researchers report nanoscale energy-efficient switching devices at IEDM 2013

Cleveland, OH | Posted on December 9th, 2013

Electromechanical switches were the building blocks of electronics before the solid-state transistor was developed during the war. A version made from silicon carbide, at the tiniest of scales, snaps on and off like a light switch, and with none of the energy-wasting current leakage that plagues the smallest electronics today.

The scientists report their findings today at the International Electron Devices Meeting in Washington D.C.

The tiny switch's moving part is only about one cubic micron in volume, more than a thousand times smaller than devices made in today's mainstream microelectromechanical systems (MEMS). Thus, this switch can move much faster and is much lighter.

The switch has also proved durable, operating for more than 10 million cycles in air, at ambient temperatures and high heat without loss of performance—far longer than most other candidates for a non-leaking switch.

Such tolerance may enable electronics-makers to build a computer that operates within the intense heat of a nuclear reactor or jet engine. Silicon transistors start to deteriorate at around 250 degrees Celsius (480 degrees Fahrenheit). Testing has shown the silicon carbide switches operate at more than 500 degrees Celsius (930 degrees Fahrenheit).

The development is significant because switching devices are at the heart of computing and communications technologies.

"In our pockets and backpacks, nowadays we often carry mobile devices that consist of billions of such building blocks, which are switching on and off to perform the information processing functions," explained Philip Feng, professor of electrical engineering and computer science at Case Western Reserve and leader of the project.

Silicon-based metal-oxide-semiconductor field effect transistors, called MOSFETs, are the dominant switching devices in integrated circuits and have led to many extraordinary technologies enjoyed today, Feng said. But continued miniaturization of silicon MOSFETs over the past several decades has recently slowed, as power consumption and heat dissipation have become major challenges.

Energy is lost and heat generated because nanoscale MOFSETs leak like an old faucet. Electrons continue to travel through a switch that's turned off.

"The silicon switches are leaking power at about 1 to 10 nanowatts each," Feng said. "When you have a billion of these on a computer chip, you're losing a few to tens of watts of power. That will consume the battery you carry, even when the transistors are not actively performing computing functions."

Large data centers aren't only wasting that energy, they're paying the costs of cooling to prevent computers from overheating.

Tina He, Prof. Feng's PhD student in electrical engineering and computer science at Case School of Engineering, will provide details about making and testing the switches in her presentation, Silicon Carbide (SiC) Nanoelectromechanical Switches and Logic Gates with Long Cycles and Robust Performance in Ambient Air and High Temperature, at the international meeting. She is scheduled to speak in the "Nano Device Technology - Steep-Slope Devices" session at 3:40 p.m. (Eastern U.S. time), Monday, Dec. 9.

The research team has made three-terminal, gate-controlled switches and different kinds of logic gates - fundamental elements used in computing and communications.

"Compared to silicon and other common materials, SiC is quite special because it is much more resistive to oxidation, to chemical contaminants and to wear," Feng said. "Those properties should lend themselves to devices with more robust performance while protecting them from harsh operating environments."

###

Co-authors of the conference paper are: Case Western Reserve graduate students Rui Yang and Vaishnavi Ranganathan, staff engineer Srihari Rajgopal, electrical engineering and computer science professors Swarup Bhunia and Mehran Mehregany, and Mary Anne Tupta, senior research engineer from Keithley Instruments Inc.

The work is supported by grants from the Defense Advanced Research Projects Agency's Microsystems Technology Office and the National Science Foundation.

The Institute of Electrical and Electronics Engineers has hosted the international meeting for nearly 60 years, to report breakthroughs in a growing range of electronic device technology.

####

For more information, please click here

Contacts:
Kevin Mayhood

216-368-4442

Copyright © Case Western Reserve University

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

News and information

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Govt.-Legislation/Regulation/Funding/Policy

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Silicon chip with integrated laser: Light from a nanowire: Nanolaser for information technology February 12th, 2016

Electric-car battery materials could harm key soil bacteria February 11th, 2016

Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016

Chip Technology

Silicon chip with integrated laser: Light from a nanowire: Nanolaser for information technology February 12th, 2016

Research reveals carbon films can give microchips energy storage capability: International team from Drexel University and Paul Sabatier University reveals versatility of carbon films February 11th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

SUNY Poly and GLOBALFOUNDRIES Announce New $500M R&D Program in Albany To Accelerate Next Generation Chip Technology: Arrival of Second Cutting Edge EUV Lithography Tool Launches New Patterning Center That Will Generate Over 100 New High Tech Jobs at SUNY Poly February 9th, 2016

Nanoelectronics

Silicon chip with integrated laser: Light from a nanowire: Nanolaser for information technology February 12th, 2016

Electron's 1-D metallic surface state observed: A step for the prediction of electronic properties of extremely-fine metal nanowires in next-generation semiconductors February 9th, 2016

The iron stepping stones to better wearable tech without semiconductors February 8th, 2016

New type of nanowires, built with natural gas heating: UNIST research team developed a new simple nanowire manufacturing technique February 1st, 2016

Discoveries

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Announcements

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Events/Classes

Cima NanoTech Debuts Large Interactive Touch Screens with European Customers at ISE 2016: For the first time in Europe, Cima NanoTech’s wide range of high performance, projected capacitive touch modules are showcased February 11th, 2016

Nanotech Security to Present at the Optical Document Security Conference February 11, 2016 February 4th, 2016

New research uses nanotechnology to prevent preterm birth: March of Dimes honors abstract on prematurity at SMFM Annual Meeting February 2nd, 2016

Leti to Host Workshop on New Photonics Applications During SPIE Photonics West: Researchers also Will Present Four Invited Papers At Feb. 13-18 Conference, 14 Papers, Overall January 25th, 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