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Physics / Materials news 1234

Silicon photonic crystals key to optical cloaking

June 25, 2008 | User rating: 4.5 / 5 after 43 vote(s) | User comments: 8

In computer simulations, the researchers have demonstrated an approximate cloaking effect created by concentric rings of silicon photonic crystals. The mathematical proof brings scientists a step closer to a practical solution ...


Exciton-based circuits eliminate a 'speed trap' between computing and communication signals

June 19, 2008 | User rating: 4.7 / 5 after 21 vote(s) | User comments: 3

Particles called excitons that emit a flash of light as they decay could be used for a new form of computing better suited to fast communication, physicists at UC San Diego have demonstrated.


NIST/NIH micromagnets show promise as colorful 'smart tags' for magnetic resonance imaging

June 18, 2008 | User rating: not shown ( 2 vote(s) ) | No comments yet

Colo.-Customized microscopic magnets that might one day be injected into the body could add color to magnetic resonance imaging (MRI), while also potentially enhancing sensitivity and the amount of information ...


Study Finds New Properties in Non-Magnetic Materials

June 11, 2008 | User rating: 4.2 / 5 after 19 vote(s) | User comments: 1

A team of Penn State researchers has shown for the first time that the entire class of non-magnetic materials, such as those used in some computer components, could have considerably more uses than scientists ...


Testing, Radiation Testing: Northwestern Transistors On Space Station

June 10, 2008 | User rating: 4.5 / 5 after 17 vote(s) | User comments: 2

Transistors based on a new kind of material created by Northwestern University researchers have been lifted into outer space on the space shuttle Endeavour and attached to the outside of the International ...


A glass apart

June 05, 2008 | User rating: 4.5 / 5 after 25 vote(s) | No comments yet

British scientists are developing a new type of glass that can dissolve and release calcium into the body. This will enable patients to regrow bones and could signal a move away from bone transplants.


Bright sparks make gains towards plastic lasers of the future

May 23, 2008 | User rating: 4.5 / 5 after 36 vote(s) | User comments: 2

Imperial researchers have come one step closer to finding the 'holy grail' in the field of plastic semiconductors by demonstrating a class of material that could make electrically-driven plastic laser diodes ...


New process could cause titanium price to tumble

May 20, 2008 | User rating: 4.5 / 5 after 80 vote(s) | User comments: 7

Whether for stopping cars or bullets, titanium is the material of choice, but it has always been too expensive for all but the most specialized applications.


Research puts new wrinkle in study of materials folding under pressure

May 15, 2008 | User rating: 4.1 / 5 after 7 vote(s) | No comments yet

Scientists at the University of Chicago and the University of Santiago in Chile have explained, for the first time, the physics that governs how thin materials at scales millions of times different in thickness ...


MIT Creates New Material For Fuel Cells, Increases Power Output By 50 Percent

May 15, 2008 | User rating: 4.4 / 5 after 48 vote(s) | User comments: 1

MIT engineers have improved the power output of one type of fuel cell by more than 50 percent through technology that could help these environmentally friendly energy storage devices find a much broader market, ...


Disorder Enables Extreme Sensitivity in Piezoelectric Materials

May 14, 2008 | User rating: 4.2 / 5 after 6 vote(s) | No comments yet

A research team working at the National Institute of Standards and Technology has found an explanation for the extreme sensitivity to mechanical pressure or voltage of a special class of solid materials called relaxors. The ...


Possible Mechanism for Enormous Electromechanical Response

May 12, 2008 | User rating: 4.6 / 5 after 36 vote(s) | User comments: 1

Scientists at the U.S. Department of Energy's Brookhaven National Laboratory and collaborators at Stony Brook University, Johns Hopkins University, and the National Institute of Standards and Technology have ...


Modern ceramics help advance technology

May 08, 2008 | User rating: 3.6 / 5 after 9 vote(s) | No comments yet

Many important electronic devices used by people today would be impossible without the use of ceramics. A new study published in the Journal of the American Ceramic Society illustrates the use of ceramic materials ...


Engineers 'bone' up on biological materials

May 07, 2008 | User rating: not shown ( 4 vote(s) ) | No comments yet

In a recent feature article published in Materials Research Society's Bulletin, Dr Michelle Oyen explores the potential uses of synthetic bone-like material. Michelle suggests that these materials will ...


New 3-D Test Method for Biomaterials 'Flat Out' Faster

April 29, 2008 | User rating: not shown ( 4 vote(s) ) | User comments: 1

A novel, three-dimensional (3-D) screening method for analyzing interactions between cells and new biomaterials could cut initial search times by more than half, researchers from the National Institute of Standards and Technology ...


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