Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Innovation: Magnetic Field Conductors

25.06.2014

A Catalan, German and Austrian group of physicists has developed a new technology to transfer magnetic fields to arbitrary long distances, which is comparable to transmitting and routing light in optical fibers.

Oriol Romero-Isart and his colleagues have theoretically proposed and already tested this new device experimentally. The field of possible applications is broad and includes spintronic and quantum computers among others.


A new technology transfers magnetic fields to arbitrary long distances, which is comparable to transmitting and routing light in optical fibers. Universitat Autònoma de Barcelona

In today’s high-tech world, transferring electromagnetic waves is essential for many technologies. This can be seen with information being circulated worldwide via optic fibers. However, a device capable of doing this with static magnetic fields does not exist as the transferred field rapidly decays with distance from the source. In Innsbruck, theoretical physicist Oriol Romero-Isart and his colleagues have now found a surprisingly simple solution for this problem.

Magnetic hose

“Our theoretical studies have shown that we need a material with extreme anisotropic properties to transfer and route static magnetic fields,” explains theoretical physicist Romero-Isart. This means that the material has to have extremely good permeability in one direction but zero in the perpendicular direction. Since no material exists with such extreme anisotropy, the physicists designed a different strategy: They used a ferromagnetic cylinder and wrapped it with a superconductor shell. “Superconductors are perfect magnetic insulators,” explains Romero-Isart. The researcher’s calculations showed that a structure of alternated superconducting and soft ferromagnetic concentric cylindrical layers could transfer more than 90% of the magnetic field to any distance. Remarkably, the researchers also calculated that up to 75 % of the magnetic field can be transferred by using only a bilayer scheme – a ferromagnetic core with a superconducting outer layer.

Proof-of-principle experiment

After theoretically proposing this scheme, the team experimentally demonstrated such a device. They wrapped a ferromagnet made of cobalt and iron with a high-temperature superconductor and conducted several tests. “Even though our technical set-up wasn’t perfect, we could show that the static magnetic field is transferred well by the hose,” says Prof. Sanchez, the Catalan group leader of Oriol Romero-Isart’s collaborators.
This new method could be used, for example, for future quantum technology coupling distant quantum systems magnetically, applications in spintronics and other nano technologies.

The work of the physicists from the Universitat Autonoma de Barcelona, the Max-Planck-Institute of Quantum Optics, the Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences and the Institute for Theoretical Physics of the University of Innsbruck has been published in the renowned journal Physical Review Letters. The project is funded by the European Union and the European Research Council among others.

Publication: Long-distance Transfer and Routing of Static Magnetic Fields. C. Navau, J. Prat-Camps, O. Romero-Isart, J. I. Cirac, and A. Sanchez. Phys. Rev. Lett. 112, 253901
DOI: 10.1103/PhysRevLett.112.253901 (arXiv:1304.6300v2)

Contact
Univ.-Prof. Dr. Oriol Romero-Isart
Institute for Quantum Optics and Quantum Information
Austrian Academy of Sciences
phone: +43 512 507 4730
email: oriol.romero-isart@uibk.ac.at
web: http://iqoqi.at/en/group-page-romero-isart

Christian Flatz
Public Relations
University of Innsbruck
phone: +43 512 507 32022
email: christian.flatz@uibk.ac.at

Weitere Informationen:

http://dx.doi.org/10.1103/PhysRevLett.112.253901 - Long-distance Transfer and Routing of Static Magnetic Fields. C. Navau, J. Prat-Camps, O. Romero-Isart, J. I. Cirac, and A. Sanchez. Phys. Rev. Lett. 112, 253901
http://arxiv.org/abs/1304.6300v2 - arXiv:1304.6300v2
http://iqoqi.at/en/group-page-romero-isart - Quantum Nanophysics, Optics and Information

Dr. Christian Flatz | Universität Innsbruck

More articles from Physics and Astronomy:

nachricht Breakthrough with a chain of gold atoms
17.02.2017 | Universität Konstanz

nachricht New functional principle to generate the „third harmonic“
16.02.2017 | Laser Zentrum Hannover e.V.

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Switched-on DNA

20.02.2017 | Materials Sciences

Second cause of hidden hearing loss identified

20.02.2017 | Health and Medicine

Prospect for more effective treatment of nerve pain

20.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>