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Tuesday, August 23, 2011

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Nano bundles pack a powerful punch: Solid-state energy storage takes a leap forward

Posted: 22 Aug 2011 12:25 PM PDT

Researchers have created a solid-state, nanotube-based supercapacitor that promises to combine the best qualities of high-energy batteries and fast-charging capacitors in a device suitable for extreme environments.

Beams to order from table-top accelerators

Posted: 22 Aug 2011 10:50 AM PDT

Laser plasma accelerators could create powerful electron beams within a fraction of the space required by conventional accelerators and light sources -- and at a fraction of the cost. But fulfilling the promise of "table-top accelerators" requires the ability to tune stable, high-quality beams through a range of energies. Scientists have now demonstrated a two-stage, tunable laser plasma accelerator that meets the goal.

Sketching with superconductors: Breakthrough in controlling defects could lead to new generation of electronic devices

Posted: 22 Aug 2011 10:18 AM PDT

Researchers in the UK and Italy have discovered a technique to "draw" superconducting shapes using an X-ray beam. This ability to create and control tiny superconducting structures has implications for a completely new generation of electronic devices.

Astronomers find ice and possibly methane on Snow White, a distant dwarf planet

Posted: 22 Aug 2011 09:49 AM PDT

Astronomers have discovered that the dwarf planet 2007 OR10 -- nicknamed Snow White -- is an icy world, with about half its surface covered in water ice that once flowed from ancient, slush-spewing volcanoes. The new findings also suggest that the red-tinged dwarf planet may be covered in a thin layer of methane, the remnants of an atmosphere that's slowly being lost into space.

Tunable nano-suspensions for light harvesting; Discovery may be key to solar energy and smart glass technologies

Posted: 22 Aug 2011 08:21 AM PDT

A researcher has developed a patent-pending robust process to manufacture stable suspensions of metal nanoparticles capable of capturing sunlight.

Simple security for wireless

Posted: 22 Aug 2011 08:17 AM PDT

Researchers have demonstrated the first wireless security scheme that can protect against "man-in-the-middle" attacks -- but doesn't require a password.

Galaxies are running out of gas: Why the lights are going out in the Universe

Posted: 22 Aug 2011 07:20 AM PDT

The universe forms fewer stars than it used to, and a new study has now shown why: compared to the past, galaxies today have less gas from which to make stars.

Better 'photon loops' may be key to computer and physics advances

Posted: 22 Aug 2011 07:19 AM PDT

Scientists have designed a fault-tolerant way to make "photon delay" devices, a key component for future photon-based computer chips.

Quick and cheap data storage? New multiferroic material is both electrically charged and magnetic

Posted: 22 Aug 2011 07:19 AM PDT

Researchers have engineered a material that exhibits a rare and versatile trait in magnetism at room temperature. It's called a "multiferroic," and it means that the material has properties allowing it to be both electrically charged (ferroelectric) and also the ability to be magnetic (ferromagnetic), with its magnetization controlled by electricity.

Are stellar explosions created equal? Scientists recheck a standard model for supernovae on which cosmic distance measurement is based

Posted: 22 Aug 2011 07:19 AM PDT

A new analysis of Type Ia supernova, used to measure cosmic distance, suggests many of them develop from similar initial conditions.

Nanowires get into the groove

Posted: 22 Aug 2011 07:19 AM PDT

Scientists have discovered that growing nanowires out, not up, can keep them in line.

Large Hadron Collider experiments eliminate more Higgs hiding spots

Posted: 22 Aug 2011 06:16 AM PDT

Two experimental collaborations at the Large Hadron Collider, located at CERN laboratory near Geneva, Switzerland, announced that they have significantly narrowed the mass region in which the Higgs boson could be hiding. The ATLAS and CMS experiments excluded with 95 percent certainty the existence of a Higgs over most of the mass region from 145 to 466 GeV.

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