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Wednesday, March 14, 2012

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Barrier to faster graphene devices identified and suppressed

Posted: 13 Mar 2012 03:52 PM PDT

Physicists report that they have nailed down the source of the interference inhibiting the rapid flow of electrons through graphene-based devices and found a way to suppress it.

Cassini spies wave rattling jet stream on Jupiter

Posted: 13 Mar 2012 12:54 PM PDT

New movies of Jupiter are the first to catch an invisible wave shaking up one of the giant planet's jet streams, an interaction that also takes place in Earth's atmosphere and influences the weather. The movies, made from images taken by NASA's Cassini spacecraft when it flew by Jupiter in 2000, are part of an in-depth study conducted by a team of scientists and amateur astronomers.

Scientists tap the cognitive genius of tots to make computers smarter

Posted: 13 Mar 2012 09:17 AM PDT

People often wonder if computers make children smarter. Scientists are now asking the reverse question: Can children make computers smarter? It appears so.

Hydrogen power in real life: Clean and energy efficient

Posted: 13 Mar 2012 09:15 AM PDT

Since 2009, a hydrogen powered street cleaning vehicle has been undergoing testing on the streets of Basel. The project is intended to take hydrogen drives out of the laboratory and onto the streets in order to gain experience on using them under practical conditions. The result of the pilot trial: hydrogen as a fuel for municipal utility vehicles saves energy, is environmentally friendly and is technically feasible. In order to make it cost-effective, however, the prices of fuel cells, pressurized storage tanks and electric drives must all drop significantly.

Laser lightning rod: Guiding bursts of electricity with a flash of light

Posted: 13 Mar 2012 06:20 AM PDT

Lightning is a fascinating but dangerous atmospheric phenomenon. New research reveals that brief bursts of intense laser light can redirect these high-power electrical discharges.

Diamond-based materials brighten the future of electronics

Posted: 13 Mar 2012 06:20 AM PDT

Researchers have found a way to combine ultrananocrystalline diamond with graphene and gallium nitride, greatly improving the thermal properties of the material and helping to overcome theoretical limitations on semiconducting circuits.

Artificially structured metamaterials may boost wireless power transfer

Posted: 12 Mar 2012 04:27 PM PDT

More than one hundred years after the pioneering inventor Nikola Tesla first became fascinated with wireless energy transfer, the spread of mobile electronic devices has sparked renewed interest in the ability to power up without plugging in. Now researchers have proposed a way to enhance the efficiency of wireless power transfer systems by incorporating a lens made from a new class of artificial materials.

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