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superconductor

— Science

Cesium atoms get a shake-up to create excitation in superfluid

By - February 24, 2015 1 Picture
Helium-4 superfluid is a fascinating substance. With properties that seemingly defy normal physics, it leaks straight through glass, bubbles up out of containers, flows around objects and even climbs up walls. As if superfluid helium-4 was not strange enough, in 1941 it was also predicted that it should contain an exotic, particle-like excitation – a quasiparticle – called a roton. After many years of trying to verify this prediction, researchers at the University of California now claim to have successfully created a roton structure in an atomic superfluid of cesium-133. Read More
— Science

Researchers discover a universal law of superconductivity

By - January 11, 2015 1 Picture
The immutable laws that govern our universe – such as those that reign over the observable world in classical mechanics and those that rule the atomic physics world – are at the core of all of our scientific principles. They not only provide consistent, repeatable, and accurate rules that allow calculations and experiments to be tested or verified, they also help us make sense of the workings of the cosmos. MIT researchers claim to have discovered a new universal law for superconductors that, if proved accurate, would bring the physics of superconductors in line with other universal laws and advance the likes of superconducting circuits for quantum and super low-power computing. Read More
— Environment

Superconducting coil to slash costs and improve efficiency of direct-drive wind turbines

By - December 4, 2014 3 Pictures
Conventional offshore wind turbines are expensive and complicated pieces of machinery – in a large part because of their complex and maintenance-intensive gearboxes. Dr Shahriar Hossain from the University of Wollongong in Australia is looking to slash production costs and drastically improve efficiency replacing these gearboxes with a superconducting coil. Read More
— Science

Practical magnetic levitating transmission gear system loses its teeth

By - December 1, 2014 1 Picture
A new transmission device that uses magnetic levitation to almost completely eliminate friction and wear has been developed as part of the MAGDRIVE research project, a collaboration of seven European nations we looked at back in 2010. The creation of the unit entailed the development of a magnetic gear reducer and corresponding frictionless magnetic axles. Aimed primarily for use in spacecraft due to its extended mechanical life, the system is also adaptable for use in automobiles, railways, and aircraft. Read More
— Science

Scientists use light to alter properties of high temperature superconductors

By - September 2, 2012 2 Pictures
When people have a difficult problem they often talk about “shining a light on it.” Creating and controlling high-temperature superconductors has been a problem for scientists and engineers for over two decades. Now, Yoram Dagan, a professor at Tel Aviv University's (TAU) Department of Physics and Center for Nanoscience and Nanotechnology, has made a breakthrough in superconductors by literally shining a light on them. By doing this, he is able to control their properties. Read More
— Electronics

Quantum computer with separate CPU and memory represents significant breakthrough

By - February 12, 2012 4 Pictures
John Martinis’ research group at the University of California at Santa Barbara has created the first quantum computer with the quantum equivalent of conventional Von Neumann architecture. This general-purpose programmable quantum computer is realized using superconducting circuits and offers greater potential for large-scale quantum computing than the one-problem devices that have been demonstrated in this emerging field to date. Read More
— Science

Sapphire fibers carry 40 times more electricity than copper wire

By - September 9, 2011 1 Picture
One of the limitations of traditional copper electrical wiring is the fact that the metal’s resistance causes the wire to heat up, and some of the energy being carried through the wire is lost in the form of that heat. Wires made from superconducting materials, however, would have no resistance, so could transfer much more energy. While previous attempts at the technology have proven too fragile or expensive, researchers from Tel Aviv University have now developed a new type of cost-effective superconductive wire, that they claim can carry 40 times more electricity than copper wiring of the same size. Read More
— Aircraft

EADS VoltAir all-electric aircraft concept unveiled in Paris

By - June 21, 2011 3 Pictures
One of the displays that has generated a lot of buzz at the Paris Airshow 2011 is EADS’ ZEHST concept – a zero-emission hypersonic airliner, that could be whisking passengers from Tokyo to London in under 2.5 hours, by the year 2050. Sitting alongside the ZEHST model, however, is another EADS concept aimed at the more immediate future. It’s called VoltAir, and it’s a proposed all-electric airliner that could be flying within 25 years. Read More
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