Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Portable superconductivity systems for small motors: Cambridge University lab achieves a breakthrough for portable superconductivity systems that are applicable for small motors, health care and other uses

Abstract:
Superconductivity, where electrical currents course unhindered through a material, is one of modern physics' most intriguing scientific discoveries. It has many practical uses. Governments, industries, and health care and science centers all make use of superconductivity in applications extending from MRIs in hospitals to the cavities of particle accelerators, where scientists explore the fundamentals of matter. However, practical exploitation of superconductivity also presents many challenges.

Portable superconductivity systems for small motors: Cambridge University lab achieves a breakthrough for portable superconductivity systems that are applicable for small motors, health care and other uses

Washington, DC | Posted on February 8th, 2017

The challenges are perhaps greatest for researchers trying to integrate superconductivity in small, portable systems. Cambridge University academic and superconductivity expert John Durrell and his team demonstrate this week in Applied Physics Letters, from AIP Publishing, that a portable superconducting magnetic system, which is, in essence, a high performance substitute for a conventional permanent magnet, can attain a 3-tesla level for the magnetic field. Durrell said his team's work in large part evolved from the innovative findings of University of Houston physicist Roy Weinstein, who has shown how conventional electromagnets and pulsed field magnetization can be used to activate superconducting magnetic fields which are "captured" and sustained as part of a superconductive arrangement. This avoids the requirement for large expensive superconducting magnets to "activate" such portable systems. Also key, Durrell pointed out, is that his team capitalized on other new and cheaper technologies, especially for cooling.

"For example, the leap with advances in cryogenics, allows you to do interesting things in other areas, too," Durell explained. "There is a lot coming together to make this possible." While large industrial-size superconducting systems do generate a 20-tesla magnetic field, Durrell's 3-tesla magnetic field is new for a portable system.

Durrell and his team were curious about what they could do as they looked at Weinstein's work just a few years earlier. Weinstein demonstrated that with conventional external electromagnetic pulsing of a medium, it was possible to "capture" a magnetic field in a superconductor using a much smaller external magnetic field than previously thought possible. The Weinstein investigation used Yttrium Barium Cuprate doped with uranium and subject to an irradiation treatment. Durrell's team looked for a less expensive material and chose Gadolinium Barium Cuprate, without uranium doping. Difan Zhou, team investigator and lead author, came up with the idea of extending Weinstein's findings, Durrell said, and the research, which took just short of two years to do, has paid off.

"It was a surprise to us that we managed to see in a not-quite-so-cutting-edge-material the same giant flux leap effect as Roy Weinstein demonstrated," Durrell said. "The key thing that made this possible is that we have looked at what Roy has done to get it to work but for this kind of portable system. Before we were using conventional superconducting magnets to charge our bulks. This will make access to these high fields cheaper and more practical."

Advances in cheaper, more efficient cooling -- the cryogenic system -- were also key for Durrell and team's research. For both the magnetic field charging and sustaining phases, it is necessary to keep the superconducting sample cool or else the superconductivity gives out. Recently, the private sector has come up with cryogenic systems that are cheap and light, and Durrell used a cooling system from Sunpower Inc., a U.S. firm. According to Durrell, this lightness and relative low-cost could make portable superconductivity in various products a real possibility.

The total effect of bringing together these new technological opportunities, Durrell pointed out, is "essentially a better, portable permanent magnet -- one with a 3-tesla rather than 1-tesla magnetic field. The obvious interest in that is that you could use that to make a smaller and lighter motor."

Low cost NMR and MRI systems for hospitals are also a strong possibility for use, Durrell explained, as these systems often use large superconducting magnets. Magnetically targeted drug delivery systems in human and veterinary applications may also be enabled.

Durrell and his team are planning for more testing for more magnetic power and overall efficiency. They have received significant support from The Boeing Company for this investigation, and Durrell feels it is a strong example of what a company and an academic lab can do when they team up for basic research.

####

About American Institute of Physics
Applied Physics Letters features concise, rapid reports on significant new findings in applied physics. The journal covers new experimental and theoretical research on applications of physics phenomena related to all branches of science, engineering, and modern technology. See apl.aip.org.

For more information, please click here

Contacts:
AIP Media Line

301-209-3090

Copyright © American Institute of Physics

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 Links

The article, "A portable magnetic field of >3 T generated by the flux jump assisted, pulse field magnetization of bulk superconductors," is authored by Difan Zhou, Mark D. Ainslie, Yunhua Shi, Anthony R. Dennis, Kaiyuan Huang, John R. Hull, David A. Cardwell and John H. Durrell. The article will appear in Applied Physics Letters on Feb. 7, 2017 (DOI: 10.1063/1.4973991). After that date, it can be accessed at:

Related News Press

Superconductivity

Theory gives free rein to superconductivity at room temperature May 28th, 2018

Scientists Pinpoint Energy Flowing Through Vibrations in Superconducting Crystals: Interactions between electrons and the atomic structure of high-temperature superconductors impacted by elusive and powerful vibrations May 4th, 2018

When superconductivity disappears in the core of a quantum tube: By replacing the electrons with ultra-cold atoms, a group of physicists has created a perfectly clean material, unveiling new states of matter at the quantum level April 16th, 2018

Superconductivity in an alloy with quasicrystal structure March 27th, 2018

Openings/New facilities/Groundbreaking/Expansion

NanoBio Announces Corporate Name Change to BlueWillow Biologics and Closes $10M Series A Financing: Move Reflects Focus on Advancing Several Intranasal Vaccines to Human Studies May 9th, 2018

Magnetism

Piezomagnetic material changes magnetic properties when stretched March 22nd, 2018

Unexpected effect could lead to lower-power memory, computing devices March 17th, 2018

Oxford Instruments announces Dr Kate Ross as winner of the 2018 Lee Osheroff Richardson Science Prize for North and South America February 20th, 2018

Fast-spinning spheres show nanoscale systems' secrets: Rice University lab demonstrates energetic properties of colloids in spinning magnetic field February 7th, 2018

Nanomedicine

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Graphene carpets: So neurons communicate better: Research by SISSA reveals that graphene can strengthen neuronal activity, confirming the unique properties of this nanomaterial. The study has been published on Nature Nanotechnology June 13th, 2018

New optical sensor can determine if molecules are left or right 'handed' June 13th, 2018

A nanotech sensor that turns molecular fingerprints into bar codes June 7th, 2018

Discoveries

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

Announcements

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

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

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project