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Latest Levitation Stories

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2009-06-17 14:40:00

Researchers at the National Institute of Standards and Technology (NIST) have discovered that a reduction in mechanical strain at the boundaries of crystal grains can significantly improve the performance of high-temperature superconductors (HTS). Their results* could lead to lower cost and significantly improved performance of superconductors in a wide variety of applications, such as power transmission, power grid reliability and advanced physics research.One of the main challenges in...

2009-06-10 09:07:29

University of Texas at Austin physicists have created a superconducting lead sheet only two atoms thick, the thinnest such metal layer ever created. Professor Ken Shih and colleagues said the achievement lays the groundwork for future superconductor technologies. To be able to control this material -- to shape it into new geometries -- and explore what happens is very exciting, Shih said. My hope is that this superconductive surface will enable one to build devices and study new properties of...

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2009-06-08 13:00:00

A superconducting sheet of lead only two atoms thick, the thinnest superconducting metal layer ever created, has been developed by physicists at The University of Texas at Austin.Dr. Ken Shih and colleagues report the properties of their superconducting film in the June 5 issue of Science.Superconductors are unique because they can maintain an electrical current indefinitely with no power source. They are used in MRI machines, particle accelerators, quantum interference devices and other...

041c06c75f7bd3c78f808bf9ec38b7881
2009-05-16 09:45:00

Of the 92 naturally occurring elements, add another to the list of those that are superconductors.James S. Schilling, Ph.D., professor of physics in Arts & Sciences at Washington University in St. Louis, and Mathew Debessai "” his doctoral student at the time "” discovered that europium becomes superconducting at 1.8 K (-456 °F) and 80 GPa (790,000 atmospheres) of pressure, making it the 53rd known elemental superconductor and the 23rd at high pressure.Debessai, who...

2009-04-30 12:06:34

Physicists at the U.S. Department of Energy's Ames Laboratory have experimentally demonstrated that the superconductivity mechanism in the recently-discovered iron-arsenide superconductors is unique compared to all other known classes of superconductors. These findings "“ combined with iron-arsenide's potential good ability to carry current due to their low anisotropy "“ may open a door to exciting possible applications in zero-resistance power transmission.The research, led by...

2009-03-26 10:05:45

Though a year has passed since the discovery of a new family of high-temperature superconductors, a viable explanation for the iron-based materials' unusual properties remains elusive. But a team of scientists working at the National Institute of Standards and Technology (NIST) may be close to the answer.The team has found strong evidence that magnetism is a pivotal factor governing the physical properties of iron pnictides, a group of materials that conduct electricity without resistance at...

2009-03-20 10:53:24

Scientists at the University of Liverpool and Durham University have developed a new material to further understanding of how superconductors could be used to transmit electricity to built-up areas and reduce global energy losses. The team has produced a material from a football-shaped molecule, called carbon60, to demonstrate how a superconductor "“ an element, compound or alloy that does not oppose the steady passage of an electric current "“ could work at temperatures suitable...

2009-03-17 11:26:48

Scientists at the Naval Research Laboratory (NRL) have proposed theoretical models to explain the normal magnetic properties in iron-based superconductors. This research was published in the December 21, 2008 issue of Nature Physics. Their research builds on earlier research they conducted proposing a theoretical model for superconductivity in newly discovered iron-based superconductors. That earlier research was published in Physical Review Letters.To set the stage for the NRL researchers'...

2009-02-23 08:58:26

Scientists from Queen Mary, University of London and the University of Fribourg (Switzerland) have found evidence that magnetism is involved in the mechanism behind high temperature superconductivity. Writing in the journal Nature Materials, Dr Alan Drew from Queen Mary's Department of Physics and his colleagues at the University of Fribourg report on the investigation of a new high temperature superconductor, the so-called oxypnictides. They found that these exhibit some striking...

2009-01-13 11:36:06

Scientists at U.S. Department of Energy's Argonne National Laboratory used inelastic neutron scattering to show that superconductivity in a new family of iron arsenide superconductors cannot be explained by conventional theories.Funding for this research was provided by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences.  The mission of the Basic Energy Sciences (BES) program - a multipurpose, scientific research effort - is to foster and support...


Latest Levitation Reference Libraries

Maglev
2014-04-11 09:17:26

Maglev is a vehicle propulsion system that uses magnetic levitation to move a vehicle with magnets instead of wheels. The vehicle hovers a short distance above the guide way by magnets and also uses the magnets for motion. The operation of this system is quite and maintains less friction for improved acceleration and deceleration. Weather does not affect the performance of the vehicle. Currently, some trains make use of the Maglev system, but vacuum tube trains could allow a Maglev system...

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2010-09-23 20:39:09

An electromagnet, a magnet whose magnetic field is produced by the flow of electric current, works until the electric current ceases. The magnetic field in a simple electromagnet is created by a wire passing through it with an electric current. The strength of the magnet depends on the amount of current. By making the wire into a coil the magnetic field is concentrated. A straight tube coil is a solenoid. A stronger magnetic field can be produced by putting a ferromagnetic material, such as...

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Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'