 |
|
Strain has major effect on high-temp superconductors
February 16, 2007Just a little mechanical strain can cause a large drop in the maximum current carried by high-temperature superconductors, according to novel measurements carried out by the National Institute of Standards and Technology (NIST). The effect, which is reversible, adds a new dimension to designing superconducting systems—particularly for electric power applications—and it also provides a new tool that will help scientists probe the fundamental mechanism behind why these materials carry current with no resistance.
The measurements, reported in Applied Physics Letters,* revealed a 40 percent reduction in critical current, the point at which superconductivity breaks down, at just 1 percent compressive strain. This effect can be readily accommodated in the engineering design of practical applications, NIST project leader Jack Ekin says, but knowing about it ahead of time will be important to the success of many large-scale devices. The effect was measured in three types of yttrium-barium-copper-oxide (YBCO), a brittle ceramic considered the best prospect for making low-cost, high-current, superconducting wires. The researchers developed a "four point\\\
National Institute of Standards and Technology (NIST)
Science News and Science Current Events Tag Cloud
This tag cloud is a visual representation of term frequencies of random science news topics with common terms grouped together and emphasized by their display size.
Tumor Suppressor Newborn Screening Intelligence Brachytherapy Phosphorylation Archaea Cancer Therapy Liver Cells Solar Cell Antioxidants Climate Terrorism Tobacco Stereotypes Huntingtons Disease Peptides Hiv Vaccine Antimatter Extrasolar Planet Cardiovascular Disease Parkinson Disease Folate Flowering Plants Drugs Quality Of Life
See More: Science News Tags
Superconductors Current Events and Superconductors News RSSNIST discovers how strain at grain boundaries suppresses high-temperature superconductivity
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).
New Exotic Material Could Revolutionize Electronics
Move over, silicon-it may be time to give the Valley a new name. Physicists at the Department of Energy's (DOE) SLAC National Accelerator Laboratory and Stanford University have confirmed the existence of a type of material that could one day provide dramatically faster, more efficient computer chips.
Thinnest superconducting metal created
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.
New element found to be a superconductor
Of the 92 naturally occurring elements, add another to the list of those that are superconductors.
Iron-arsenic superconductors in class of their own
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.
Magnetism governs properties of iron-based superconductors
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.
Physicists offer new theory for iron compounds
An international team of physicists from the United States and China this week offered a new theory to both explain and predict the complex quantum behavior of a new class of high-temperature superconductors.
Secrets behind high temperature superconductors revealed
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.
Quantum dance: Discovery led by Princeton researchers could revolutionize computing
An international team of scientists, led by a Princeton University group, has observed an exciting and strange behavior in electrons' spin within a new material that could be harnessed to transform computing and electronics.
Argonne scientists prove unconventional superconductivity in new iron arsenide compounds
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.
More Superconductors Current Events and Superconductors News Articles
 |
The Physics of Superconductors: Introduction to Fundamentals and Applications by V.V. Schmidt (Author), Paul Müller (Editor), Alexey V. Ustinov (Editor), I.V. Grigorieva (Editor) This modern introduction to the physics of superconductors was edited by Paul Mller, (Walter Schottky Award for Solid-state Research) and Alexey V. Ustinov, both at the University of Erlangen. The revised and enlarged text is based on a lecture course given by V.V. Schmidt at the Moscow Institute of Steel and Alloys. It provides a modern treatment of the physics of superconductors with special attention paid to the physical interpretation of the phenomena. This English edition has been enlarged by the inclusion of such new developments as high-temperature superconductivity, and, as such, is the most up-to-date textbook available on the subject. Numerous problems with solutions help the student to become familiar with this field. |
 |
The Physics of Superconductors by K.H. Bennemann (Editor), John B. Ketterson (Editor) This is the second volume of a comprehensive two-volume treatise on superconductivity that represents the first such publication since the earlier widely acclaimed books by R. Parks. It systematically reviews the basic physics and recent advances in the field. Leading researchers describe the state-of-the-art in conventional phonon-induced superconductivity, high-Tc superconductivity, and in novel superconductivity, including triplet pairing in the ruthenates. The second volume is largely concerned with novel superconductors, such as heavy-fermion metals and organic materials, and also includes granular superconductors. Important new results on current problems are presented in a manner designed to stimulate further research. Numerous illustrations, diagrams and tables make this book... |
 |
Voltage Superconductor by Voltage Security, Inc. If you are interested in the underpinnings of enterprise security, cryptography or how security and usability are intimately connected - this blog will make you happyKindle blogs are fully downloaded onto your Kindle so you can read them even when you're not wirelessly connected. And unlike RSS readers which often only provide headlines, blogs on Kindle give you full text content and images, and are updated wirelessly throughout the day. |
 |
Introduction to Superconductivity: Second Edition (Dover Books on Physics) (Vol i) by Michael Tinkham (Author) Accessible to graduate students and experimental physicists, this volume emphasizes physical arguments and minimizes theoretical formalism. Topics include the Bardeen-Cooper-Schrieffer and Ginzburg-Landau theories, magnetic properties of classic type II superconductors, the Josephson effect, fluctuation effects in classic superconductors, high-temperature superconductors, and nonequilibrium superconductivity. 109 figures. 1996 edition. |
 |
Superconductor by Black Spire Media Group |
|
Superconductors: Conquering Technology's New Frontier by Randy Simon (Author), Andrew Smith (Author) | |
 |
Hit Songs for Girls by Superconductor |
 |
Avanti Blk/SS 1.7 CF Superconductor Refrigerator by Avanti The Avanti Superconductor Refrigerator - Stainless Steel (model: SHP1702SS) provides 1.7 cubic feet of refrigeration capacity with quiet thermoelectric cooling technology. The unit uses R134A refrigerant, but has no compressor, allowing quiet operation while performing as efficiently as a compressor would, while featuring auto-defrosting technology. You get all the functionality you deserve, with all the features you would expect in a premium refrigerator. It has an adjustable thermostat, an interior LED light, a reversible door, and the door shelf even fits a 2 liter bottle! Key Features: High Efficiency Solid State Components of Superior Reliability No Vibration Unique State-of-the-Art Thermoelectric Technology Environmentally Friendly Full Range... |
 |
Symmetry and Pairing in Superconductors by Kluwer Academic This book contains the latest findings of some of the world's leading researchers on high Tc superconductivity, including considerations of the order parameter and the pairing conditions. Both theoretical and advanced experimental results are outlined. Considerations of d-, s-, or more complicated order parameter symmetry are discussed at length, serving as a benchmark for an overall view of the field as of April 1998. Many of the results presented are new and have neither appeared nor been discussed previously. Interesting experimental facts are given on junctions and fluctuations, both in the presence and absence of a magnetic field. Electronic, optical, magnetic and transport properties are discussed. The editors' concern for coherence and legibility means that the book ... |
 |
Avanti Black 1.7 CF Superconductor Refrigerator by Avanti Found a better price? Give us a call. The Avanti Superconductor Refrigerator - Black (model: SHP1701B) provides 1.7 cubic feet of refrigeration capacity with quiet thermoelectric cooling technology. The unit uses R134A refrigerant, but has no compressor, allowing quiet operation while performing as efficiently as a compressor would, while featuring auto-defrosting technology. You get all the functionality you deserve, with all the features you would expect in a premium refrigerator. It has an adjustable thermostat, an interior LED light, a reversible door, and the door shelf even fits a 2 liter bottle! Key Features: High Efficiency Solid State Components of Superior Reliability No Vibration Unique State-of-the-Art Thermoelectric Technology Environmentally Friendly Full Range Temperature... |
| © 2009 BrightSurf.com |