Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Race for New Superconductors Shrinks to Nanoscale

Wires made up of yarns spun from millions of carbon nanotube bundles may help make superconductivity practical. The nanofibers making up the wire are each thousands of times smaller than a human hair.
Wires made up of yarns spun from millions of carbon nanotube bundles may help make superconductivity practical. The nanofibers making up the wire are each thousands of times smaller than a human hair.

Abstract:
Highly Engineered Materials May Solve One of Science's Toughest Problems

Race for New Superconductors Shrinks to Nanoscale

Dallas, TX | Posted on October 8th, 2009

A team of researchers from UT Dallas, Clemson University and Yale University are using science on the nanoscale to address one of the most elusive challenges in physics—the discovery of room temperature superconductivity. With that as the ultimate goal, the team is working to develop superconducting wires made from nanotubes that carry high currents at the temperature of liquid nitrogen, or higher.

With a $3 million research grant from the Air Force Office of Scientific Research (AFOSR), the team has embarked on a five-year project to invent new superconducting wires based on highly engineered nanomaterials, each component thousands of times smaller than a human hair. Such wires would be used for applications ranging from magnets for Magnetic Resonance Imaging to replacing energy-wasting copper in power transmission lines.

While traditional copper wires are highly conductive, they lose power through resistance, which translates into wasted energy. Superconductive materials transmit power without resistance, but they have to be cooled to low temperatures.

"The year 2011 marks 100 years since superconductivity was discovered," said Dr. Anvar Zakhidov, one of the researchers on the project and an associate director of the Alan G. MacDiarmid NanoTech Institute. "Still, the problem of finding a room temperature superconductor has not been solved, and present high temperature superconductors become non-superconducting when currents are moderate. Also, modern high temperature superconducting materials are too brittle, expensive and deficient in electronic properties for wide-scale application. We hope to overcome those limitations by fabricating wires from nanotubes, using carbon nanotubes or other nanotubes enhanced by atoms like boron, nitrogen or sulfur."

According to Zakhidov, who is a professor of physics, as much as 30 percent of electrical energy can be lost as heat when electricity travels through power lines. Superconducting materials promise enormous environmental and energy savings.

Under the leadership of Zakhidov and Dr. Ray Baughman, director of the NanoTech Institute, the team at the institute has already pioneered methods to assemble nanomaterials into yarns.

"Making superconducting wires and cables from nanofibers and nanoparticles presents special challenges that go beyond the discovery of new superconductors," Baughman said. "For example, for each pound of superconducting wire, it may be necessary to assemble more than 3 billion miles of individual nanotubes—and the goal is to achieve this assembly at commercially useful rates. For this task, we are inventing radically new methods for making superconducting wires."

Dr. Lisa Pfefferle, professor of chemical engineering at Yale University and member of the research team, is experimenting with new types of nanofibers that have been synthesized by her team using elements like boron.

Team member Dr. Apparao Rao, professor of physics at Clemson University, has already produced superconducting nanotubes by a process called pulsed laser ablation. The process results in carbon nanotubes "doped" with boron that superconduct at higher temperatures than other carbon based materials—but still at relatively low temperatures.

Dr. Myron Salamon, dean of the School of Natural Sciences and Mathematics, will evaluate the team's new superconductors to test the maximum temperature of superconductivity as a function of current and power transmitted, which is a crucial factor for using these materials in power systems.

"There's always been a sense that we can enhance superconductivity by using lighter materials," Salamon said. "Wires made from ultra-light nanotubes can allow atoms to vibrate easily, which helps with superconductivity. There's good evidence that carbon-based materials, like dopant modified carbon nanotubes, might make good superconductors."

Five research grants were awarded to spur development of practical high temperature superconductors. The grants are administered through the AFOSR by Project Manager Dr. Harold Weinstock, who has helped pioneer and support many other important discoveries in physics. According to Zakhidov, other universities in the collaborative superconductor race include the University of Houston, the University of Maryland, the University of California, San Diego and Stanford University.

####

About UT Dallas
The University of Texas at Dallas (also referred to as UT Dallas or UTD) is a public research university in the University of Texas System. The UTD main campus is located in Richardson, Texas, a suburb of Dallas, Texas, United States. A satellite location of UT Dallas is located adjacent to the UT Southwestern campus in central Dallas.

From Wikipedia, the free encyclopedia

For more information, please click here

Contacts:
Media contacts

Brandon V. Webb
UT Dallas
(972) 883-2155


or the Office of Media Relations
UT Dallas
(972) 883-2155

Copyright © UT Dallas

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

Down to the quantum dot: Jülich researchers develop ultrahigh-resolution 3-D microscopy technique for electric fields July 7th, 2015

Miniature Technology, Large-Scale Impact: Winner of the 2015 Lindros Award for translational medicine, Kjeld Janssen is pushing the boundaries of the emerging lab-on-a-chip technology - See more at: http://www.news.ucsb.edu/2015/015744/miniature-technology-large-scale-impact#stha July 7th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Possible Futures

BBC World Service to broadcast Forum discussion on graphene July 6th, 2015

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

Harris & Harris Group Portfolio Company D-Wave Systems Announces 1,000 Qubit Processor and is Discussed in the Economist June 23rd, 2015

Global Nanoclays Market Analysis, Size, Growth, Trends And Segment Forecasts, 2015 To 2022: Grand View Research, Inc June 15th, 2015

Chip Technology

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

Nanometrics to Announce Second Quarter Financial Results on July 23, 2015 July 2nd, 2015

The quantum middle man July 2nd, 2015

Nanotubes/Buckyballs/Fullerenes

Tel Aviv/Tsinghua University project uses crowd computing to improve water filtration: The research, a product of the new TAU-Tsinghua XIN Center, was conducted by 150,000 volunteers at IBM's World Community Grid July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Discovery of nanotubes offers new clues about cell-to-cell communication July 2nd, 2015

NIST Group Maps Distribution of Carbon Nanotubes in Composite Materials July 2nd, 2015

Nanoelectronics

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

New technology using silver may hold key to electronics advances July 2nd, 2015

Exagan Raises €5.7 Million to Produce High-efficiency GaN-on-Silicon Power-switching Devices on 200mm Wafers: Leti-and-Soitec Spinout Focused on Becoming Leading European Source Of GaN Devices for Solar, Automotive, Telecoms and Infrastructure June 25th, 2015

Nanowires could be the LEDs of the future June 25th, 2015

Announcements

Down to the quantum dot: Jülich researchers develop ultrahigh-resolution 3-D microscopy technique for electric fields July 7th, 2015

Miniature Technology, Large-Scale Impact: Winner of the 2015 Lindros Award for translational medicine, Kjeld Janssen is pushing the boundaries of the emerging lab-on-a-chip technology - See more at: http://www.news.ucsb.edu/2015/015744/miniature-technology-large-scale-impact#stha July 7th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Grants/Awards/Scholarships/Gifts/Contests/Honors/Records

Miniature Technology, Large-Scale Impact: Winner of the 2015 Lindros Award for translational medicine, Kjeld Janssen is pushing the boundaries of the emerging lab-on-a-chip technology - See more at: http://www.news.ucsb.edu/2015/015744/miniature-technology-large-scale-impact#stha July 7th, 2015

Pioneering Southampton scientist awarded prestigious physics medal July 3rd, 2015

Discovery of nanotubes offers new clues about cell-to-cell communication July 2nd, 2015

World’s 1st Full-Color, Flexible, Skin-Like Display Developed at UCF June 24th, 2015

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