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Articles in 'Physics' (Page 2)
A small quantum leap
— 11 Mar 2011 15:31Northwestern University researchers have developed a new switching device that takes quantum communication to a new level. The device is a practical step toward creating a network that takes advantage of the mysterious and powerful world of quantum mechanics…
JQI physicists demonstrate coveted 'spin-orbit coupling' in atomic gases
— 3 Mar 2011 14:17Physicists at the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology (NIST) and the University of Maryland-College Park, have for the first time caused a gas of atoms to exhibit an important quantum phenomenon known as spin-orbit coupling. Their technique opens new possibilities for studying and better understanding fundamental physics and has potential applications to quantum computing, next-generation 'spintronics' devices and even 'atomtronic' devices built from ultracold atoms…
Penn physicists develop scalable method for making graphene
— 3 Mar 2011 13:14New research from the University of Pennsylvania demonstrates a more consistent and cost-effective method for making graphene, the atomic-scale material that has promising applications in a variety of fields, and was the subject of the 2010 Nobel Prize in Physics…
Quantum simulator becomes accessible to the world
— 24 Feb 2011 18:53Experimental physicists have put a lot of effort in isolating sensitive measurements from the disruptive influences of the environment. In an international first, Austrian quantum physicists have realised a toolbox of elementary building blocks for an open-system quantum simulator, where a controlled coupling to an environment is used in a beneficial way. This offers novel prospects for studying the behaviour of highly complex quantum systems. The researchers have published their work in the scientific journal Nature…
Applied physicists discover that migrating cells flow like glass
— 22 Feb 2011 23:24By studying cellular movements at the level of both the individual cell and the collective group, applied physicists have discovered that migrating tissues flow very much like colloidal glass…
Physicists build bigger 'bottles' of antimatter to unlock nature's secrets
— 19 Feb 2011 10:27Once regarded as the stuff of science fiction, antimatter - the mirror image of the ordinary matter in our observable universe - is now the focus of laboratory studies around the world…
Physicists isolate bound states in graphene-superconductor junctions
— 15 Feb 2011 15:45Illinois researchers have documented the first observations of some unusual physics when two prominent electric materials are connected: superconductors and graphene…
Fleeting fluctuations in superconductivity disappear close to transition temperature
— 13 Feb 2011 21:13As part of an ongoing effort to uncover details of how high-temperature superconductors carry electrical current with no resistance, scientists at Johns Hopkins University and the U.S. Department of Energy's Brookhaven National Laboratory have measured fluctuations in superconductivity across a wide range of temperatures using terahertz spectroscopy. Their technique allows them to see fluctuations lasting mere billionths of a billionth of a second, and reveals that these fleeting fluctuations disappear 10-15 Kelvin (K) above the transition temperature (Tc) at which superconductivity sets in…
Delving into manganite conductivity
— 10 Feb 2011 19:19Chemical compounds called manganites have been studied for many years since the discovery of colossal magnetoresistance, a property that promises important applications in the fields of magnetic sensors, magnetic random access memories and spintronic devices. However, understanding - and ultimately controlling - this effect remains a challenge, because much about manganite physics is still not known. A research team lead by Maria Baldini from Stanford University and Carnegie Geophysical Laboratory scientists Viktor Struzhkin and Alexander Goncharov has made an important breakthrough in our understanding of the mysterious ways manganites respond when subjected to intense pressure…
Neutron analysis reveals '2 doors down' superconductivity link
— 8 Feb 2011 17:24Neutron scattering analysis of two families of iron-based materials suggests that the magnetic interactions thought responsible for high-temperature superconductivity may lie 'two doors down': The key magnetic exchange pairings occur in a next-nearest-neighbour ordering of atoms, rather than adjacent atoms…
Buckyball birth observed by Sandia nanotech researcher
Neutron scatter camera provides a way to look at radiation