ScienceDaily: Top Technology News

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• Evolution inspires more efficient solar cell design: Geometric pattern maximizes time light is trapped in solar cell
• DNA and quantum dots: All that glitters is not gold
• 'Nanotubes on a chip' may simplify optical power measurements
• A boost to your mobile signal
• Quantum communication: Each photon counts
• More than one brain behind Einstein's famous equation: E=mc2
• Origin and maintenance of a retrograde exoplanet
• Video game controllers affect hostility during game play
• Thawing 'dry ice' drives groovy action on Mars
• Magnetic levitation tissues could speed toxicity tests
• Grammar undercuts security of long computer passwords
• Nanomedicine: Controlled and targeted release of drugs

Evolution inspires more efficient solar cell design: Geometric pattern maximizes time light is trapped in solar cell Posted: 25 Jan 2013 08:13 AM PST Using a mathematical model based on natural evolution, researchers have developed an organic solar cell design that could pave the way for more efficient, less expensive solar energy.

DNA and quantum dots: All that glitters is not gold Posted: 25 Jan 2013 08:13 AM PST Scientists have shown that by bringing gold nanoparticles close to the dots and using a DNA template to control the distances, the intensity of a quantum dot's fluorescence can be predictably increased or decreased. This breakthrough opens a potential path to using quantum dots as a component in better photodetectors, chemical sensors, and nanoscale lasers.

'Nanotubes on a chip' may simplify optical power measurements Posted: 25 Jan 2013 08:13 AM PST A novel chip-scale instrument made of carbon nanotubes may simplify absolute measurements of laser power, especially the light signals transmitted by optical fibers in telecommunications networks.

A boost to your mobile signal Posted: 25 Jan 2013 08:12 AM PST When using your mobile phone, it doesn't take much to lose that precious signal - just turning a corner or riding on a train can be enough. New research is developing new technologies to eradicate those annoying 'black holes' in wireless coverage, while freeing up some mobile network capacity at the same time.

Quantum communication: Each photon counts Posted: 25 Jan 2013 07:40 AM PST Ultrafast, efficient, and reliable single-photon detectors are among the most sought-after components in photonics and quantum communication, which have not yet reached maturity for practical application. Physicist have now, however, achieved a decisive breakthrough by integrating single-photon detectors with nanophotonic chips. The detector combines near-unity detection efficiency with high timing resolution and has a very low error rate.

More than one brain behind Einstein's famous equation: E=mc2 Posted: 25 Jan 2013 07:39 AM PST A new study reveals the contribution of a little known Austrian physicist, Friedrich Hasenöhrl, to uncovering a precursor to Einstein's famous equation. Two American physicists outline the role played by Austrian physicist Friedrich Hasenöhrl in establishing the proportionality between the energy (E) of a quantity of matter with its mass (m) in a cavity filled with radiation.

Origin and maintenance of a retrograde exoplanet Posted: 25 Jan 2013 07:39 AM PST Astronomers have shown that the HAT-P-7 planetary system, which is about 1040 light-years from Earth in the constellation Cygnus, includes at least two giant planets and one companion star. The discovery of a previously unknown companion (HAT-P-7B) to the central star (HAT-P-7) as well as confirmation of another giant planet (HAT-P-7c) orbiting outside of the retrograde planet HAT-P-7b, offer new insights into how retrograde planets may form and endure.

Video game controllers affect hostility during game play Posted: 25 Jan 2013 07:39 AM PST When selecting a video game to play, opting to turn on your Wii may provide a different experience than playing your Xbox, according to a new study.

Thawing 'dry ice' drives groovy action on Mars Posted: 25 Jan 2013 06:53 AM PST Researchers using NASA's Mars Reconnaissance Orbiter see seasonal changes on far-northern Martian sand dunes caused by warming of a winter blanket of frozen carbon dioxide.

Magnetic levitation tissues could speed toxicity tests Posted: 24 Jan 2013 03:36 PM PST In a development that could lead to faster and more effective toxicity tests for airborne chemicals, scientists have used magnetic levitation to grow some of the most realistic lung tissue ever produced in a laboratory.

Grammar undercuts security of long computer passwords Posted: 24 Jan 2013 09:35 AM PST When writing or speaking, good grammar helps people make themselves be understood. But when used to concoct a long computer password, grammar -- good or bad -- provides crucial hints that can help someone crack that password, researchers have demonstrated.

Nanomedicine: Controlled and targeted release of drugs Posted: 24 Jan 2013 06:14 AM PST Researchers have discovered a method that allows for the controlled release of an active agent on the basis of a magnetic nanovehicle. The research opens up new possibilities for the development of targeted treatments, which are more efficient and trigger fewer side effects.

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