http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Two scientists at the U.S. Department of Energy's Brookhaven National Laboratory have developed a method to control the buildup of hydrogen fluoride gas during the growth of precision crystals needed for applications such as superconductors, optical devices, and microelectronics. The invention -- by Vyacheslav Solovyov and Harold Wiesmann and recently awarded U.S. Patent number 7,622,426 -- could lead to more efficient production and improved performance of these materials. http://www.physorg.com/news179664593.html Physics Thu, 10 Dec 2009 10:50:30 EST news179664593 (PhysOrg.com) -- "Carbon nanotubes are exciting for fundamental physics, and for potential technological applications," Nadya Mason tells PhysOrg.com. "However, we are generally limited in the way that we can study them. Many of these limitations have to do with controlling tunneling, or the way electrons move on and off the nanotube." In order to overcome this limitation, Mason, a scientist at the University of Illinois at Urbana-Champaign, participated in an experiment using a superconducting tunnel probe in a carbon nanotube to observe spectroscopic features. http://www.physorg.com/news177934374.html Nanotechnology Fri, 20 Nov 2009 10:13:55 EST news177934374 Danish nanophysicists have developed a new method for manufacturing the cornerstone of nanotechnology research - nanowires. The discovery has great potential for the development of nanoelectronics and highly efficient solar cells. http://www.physorg.com/news176377185.html Nanotechnology Mon, 02 Nov 2009 09:50:01 EST news176377185 (PhysOrg.com) -- Using precision techniques for making superconducting thin films layer-by-layer, physicists at the U.S. Department of Energy's Brookhaven National Laboratory have identified a single layer responsible for one such material's ability to become superconducting, i.e., carry electrical current with no energy loss. The technique, described in the October 30, 2009, issue of Science, could be used to engineer ultrathin films with "tunable" superconductivity for higher-efficiency electronic devices. http://www.physorg.com/news176045082.html Physics Thu, 29 Oct 2009 14:25:20 EST news176045082 (PhysOrg.com) -- A team of Cornell researchers recently tested their work on the mysterious physical phenomenon of flux pinning aboard a near-zero gravity aircraft. http://www.physorg.com/news175868095.html Physics Tue, 27 Oct 2009 13:15:24 EST news175868095 (PhysOrg.com) -- The LHC (Large Hadron Collider) is once again colder than deep space as it is prepared for experiments to resume in late November. http://www.physorg.com/news175243758.html Physics Tue, 20 Oct 2009 09:20:01 EST news175243758 (PhysOrg.com) -- 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. http://www.physorg.com/news174291999.html Nanotechnology Fri, 09 Oct 2009 08:00:01 EST news174291999 (PhysOrg.com) -- Scientists have a long and unsuccessful history of attempting to convert hydrogen to a metal by squeezing it under incredibly high and steady pressures. http://www.physorg.com/news173975824.html Physics Mon, 05 Oct 2009 15:38:07 EST news173975824 A Rice University-led team of physicists at seven U.S. universities has won $5 million from the Department of Defense to build a simulator capable of tackling high-temperature superconductivity, one of the most vexing mysteries of modern physics. http://www.physorg.com/news172925114.html Physics Wed, 23 Sep 2009 12:00:03 EST news172925114 (AP) -- A Chinese official tried to calm unease about curbs on exports of rare earths used in clean energy products and superconductors, saying Thursday that sales will continue but must be limited to reduce damage to China's environment. http://www.physorg.com/news171178307.html Space & Earth Thu, 03 Sep 2009 07:00:02 EST news171178307 (PhysOrg.com) -- A team of U.S. and Japanese scientists has shown for the first time that the spectroscopic "fingerprint" of high-temperature superconductivity remains intact well above the super chilly temperatures at which these materials carry current with no resistance. This confirms that certain conditions necessary for superconductivity exist at the warmer temperatures that would make these materials practical for energy-saving applications - if scientists can figure out how to get the current flowing. http://www.physorg.com/news170602115.html Physics Thu, 27 Aug 2009 14:29:39 EST news170602115 (PhysOrg.com) -- Researchers at the Stanford Institute for Materials and Energy Science, a joint institute of SLAC and Stanford University, have produced a hydrogen-rich alloy that could provide insight into the properties of metallic hydrogen, according to a study published in the August 17 issue of Proceedings of the National Academy of Sciences. The work is a step toward materials with revolutionary implications for energy science, enabling lossless power transmission, next-generation particle accelerators and even magnetic levitation. http://www.physorg.com/news170007996.html Physics Thu, 20 Aug 2009 17:28:01 EST news170007996 New UBC research has literally and figuratively poked holes in single-band Hubbard physics--a model that has been used to predict and calculate the behavior of high-temperature superconductors for 20 years. http://www.physorg.com/news169919945.html Physics Wed, 19 Aug 2009 17:00:01 EST news169919945 CERN 's Large Hadron Collider will initially run at an energy of 3.5 TeV per beam when it starts up in November this year. This news comes after all tests on the machine's high-current electrical connections were completed last week, indicating that no further repairs are necessary for safe running. http://www.physorg.com/news168792030.html Physics Thu, 06 Aug 2009 15:41:11 EST news168792030 Trapping and cooling a microscopic clump of gas and then suddenly releasing it would normally result in the gas rapidly expanding outward in all directions, like a spherical bubble. http://www.physorg.com/news168629014.html Physics Tue, 04 Aug 2009 18:25:10 EST news168629014 (PhysOrg.com) -- Conquering one of the biggest challenges in the study of high-temperature (high-Tc) superconductors, scientists at the U.S. Department of Energy`s Brookhaven National Laboratory have grown crystals of one such material that are large enough to directly measure the material`s magnetic properties. These measurements, published online on August 2 by Nature Physics, cast considerable doubt on some assumptions commonly made in trying to understand the role magnetism plays in these materials` ability to carry current with no resistance. Such materials promise more-efficient, lower-cost energy transmission if they can be made to operate under real-world conditions. http://www.physorg.com/news168529619.html Physics Mon, 03 Aug 2009 14:47:39 EST news168529619 Superconductivity appears to rely on very different mechanisms in two varieties of iron-based superconductors. The insight comes from research groups that are making bold statements about the correct description of superconductivity in iron-based compounds in two papers about to be published in journals of the American Physical Society. http://www.physorg.com/news166680373.html Physics Mon, 13 Jul 2009 05:06:49 EST news166680373 (PhysOrg.com) -- A Princeton-led research team has revealed surprising information about how electron behavior influences the conduction of electricity in a class of high-temperature superconductors. An increased understanding of this mechanism could one day transform a number of technologies, including the transmission of electrical power. http://www.physorg.com/news165511195.html Physics Mon, 29 Jun 2009 16:20:36 EST news165511195 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. http://www.physorg.com/news164457791.html Physics Wed, 17 Jun 2009 12:10:02 EST news164457791 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. http://www.physorg.com/news163676931.html Physics Mon, 08 Jun 2009 10:49:24 EST news163676931 (PhysOrg.com) -- 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. http://www.physorg.com/news161453431.html Physics Wed, 13 May 2009 17:10:44 EST news161453431 (PhysOrg.com) -- When helium is cooled to around 4 degrees above absolute zero, it turns liquid. Make it a couple of degrees cooler, and it becomes a "superfluid" that flows without resistance from its container, just as electrons flow without resistance in a superconductor. http://www.physorg.com/news160408487.html Physics Fri, 01 May 2009 14:55:07 EST news160408487 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. http://www.physorg.com/news160238619.html Physics Wed, 29 Apr 2009 15:44:26 EST news160238619 (PhysOrg.com) -- Scientists at the Naval Research Laboratory 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. http://www.physorg.com/news158859865.html Physics Mon, 13 Apr 2009 16:44:44 EST news158859865 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. http://www.physorg.com/news156695024.html Physics Thu, 19 Mar 2009 15:24:34 EST news156695024 (PhysOrg.com) -- 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 talent remains elusive. But a team of scientists working at the National Institute of Standards and Technology (NIST) may be close to the answer. http://www.physorg.com/news156615918.html Physics Wed, 18 Mar 2009 17:25:47 EST news156615918 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. http://www.physorg.com/news156435623.html Physics Mon, 16 Mar 2009 15:20:49 EST news156435623 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. http://www.physorg.com/news156094850.html Physics Thu, 12 Mar 2009 16:41:34 EST news156094850 (PhysOrg.com) -- Traditionally, magnetism and superconductivity don't mix. For more than 20 years, the only known superconductors that worked at so-called "high" temperatures (above 30 K, or about -406 degrees Fahrenheit) were almost all based on copper. Materials with strong magnetism, scientists thought, would disrupt the pairing of electrons that is key to achieving the frictionless flow of superconductivity. So when a group of researchers recently found high-temperature superconductivity present in a class of iron-based materials, their discovery shocked and excited the scientific community. http://www.physorg.com/news155494328.html Physics Thu, 05 Mar 2009 16:52:46 EST news155494328 (PhysOrg.com) -- The paper published in the Journal of the American Chemical Society (JACS) by a team led by professor Francesc Illas of the University of Barcelona's Department of Physical Chemistry and director of the Laboratory of Computational Materials Science (CMSL) will help to broaden our understanding of the nature of superconducting materials and of the origin of the superconductivity phenomenon in high critical temperature materials. http://www.physorg.com/news154681879.html Physics Tue, 24 Feb 2009 07:12:11 EST news154681879