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Friday, February 10, 2012

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Electrical engineers build 'no-waste' laser

Posted: 09 Feb 2012 02:33 PM PST

Researchers have built the smallest room-temperature nanolaser to date, as well as an even more startling device: a highly efficient, "thresholdless" laser that funnels all its photons into lasing, without any waste.

'Dark plasmons' transmit energy

Posted: 09 Feb 2012 02:29 PM PST

Microscopic channels of gold nanoparticles have the ability to transmit electromagnetic energy that starts as light and propagates via "dark plasmons," according to researchers.

Hydrogen from acidic water: Potential low cost alternative to platinum for splitting water

Posted: 09 Feb 2012 12:28 PM PST

A technique for creating a new molecule that structurally and chemically replicates the active part of the molybdenite catalyst paves the way for developing catalytic materials that can serve as effective low-cost alternatives to platinum for generating hydrogen gas from water.

Seismic resistance: Model analyzes shape-memory alloys for use in earthquake-resistant structures

Posted: 09 Feb 2012 10:58 AM PST

Recent earthquake damage has exposed the vulnerability of existing structures to strong ground movement. Researchers are now analyzing shape-memory alloys for their potential use in constructing seismic-resistant structures.

New battery could lead to cheaper, more efficient solar energy

Posted: 09 Feb 2012 10:58 AM PST

Scientists have found that a new type of battery has the potential to improve the efficiency and reduce the cost of solar power.

Nanotube therapy takes aim at breast cancer stem cells

Posted: 09 Feb 2012 10:14 AM PST

Researchers have again shown that injecting multiwalled carbon nanotubes (MWCNTs) into tumors and heating them with a quick, 30-second laser treatment can kill them.

Piranha vs. Arapaima: Engineers find inspiration for new materials in piranha-proof armor

Posted: 09 Feb 2012 07:18 AM PST

It's a matchup worthy of a late-night cable movie: put a school of starving piranha and a 300-pound fish together, and who comes out the winner? The surprising answer -- given the notorious guillotine-like bite of the piranha -- is Brazil's massive Arapaima fish. The secret to Arapaima's success lie in its intricately designed scales, which could provide "bioinspiration" for engineers looking to develop flexible ceramics.

Scientists make iron transparent: For first time, experiment shows that atomic nuclei can become transparent

Posted: 08 Feb 2012 10:23 AM PST

At the high-brilliance synchrotron light source PETRA III, scientists have succeeded in making atomic nuclei transparent with the help of X-ray light. At the same time they have also discovered a new way to realize an optically controlled light switch that can be used to manipulate light with light, an important ingredient for efficient future quantum computers.

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