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MRI, on a molecular scale

Researchers develop system that could one day peer into the atomic structure of individual molecules

23-04-2014

For decades, scientists have used techniques like X-ray crystallography and nuclear magnetic resonance imaging (NMR) to gain invaluable insight into the atomic structure of molecules, but such efforts have long been hampered by the fact that they demand large quantities of a specific molecule and ...

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New materials for hydrogen storage

17-04-2014

Engineers at the University of California, San Diego, have created new ceramic materials that could be used to store hydrogen safely and efficiently. The researchers have created for the first time compounds made from mixtures of calcium hexaboride, strontium and barium hexaboride. They also have ...

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Sunlight generates hydrogen in new porous silicon

14-04-2014

Porous silicon manufactured in a bottom up procedure using solar energy can be used to generate hydrogen from water, according to a team of Penn State mechanical engineers, who also see applications for batteries, biosensors and optical electronics as outlets for this new material. The surface ...

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Self-assembled superlattices create molecular machines with 'hinges' and 'gears'

08-04-2014

A combined computational and experimental study of self-assembled silver-based structures known as superlattices has revealed an unusual and unexpected behavior: arrays of gear-like molecular-scale machines that rotate in unison when pressure is applied to them. Computational and experimental ...

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Tiny power generator runs on spit

07-04-2014

Saliva-powered micro-sized microbial fuel cells can produce minute amounts of energy sufficient to run on-chip applications, according to an international team of engineers. Bruce E. Logan, Evan Pugh Professor and Kappe Professor of Environmental Engineering, Penn State, credited the idea to ...

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A new US time standard

NIST-F2 atomic clock

07-04-2014

The U.S. Department of Commerce's National Institute of Standards and Technology (NIST) has officially launched a new atomic clock, called NIST-F2, to serve as a new U.S. civilian time and frequency standard, along with the current NIST-F1 standard. NIST-F2 would neither gain nor lose one second ...

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Novel membrane reveals water molecules will bounce off a liquid surface

Study may lead to more efficient water-desalination systems, fundamental understanding of fluid flow

18-03-2014

Consider the nearest water surface: a half-full glass on your desk, a puddle outside your window, or a lake across town. All of these surfaces represent liquid-vapor interfaces, where liquid meets air. Molecules of water vapor constantly collide with these liquid surfaces: Some make it through ...

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Building new drugs just got easier

14-03-2014

Scientists at The Scripps Research Institute (TSRI) have developed a method for modifying organic molecules that significantly expands the possibilities for developing new pharmaceuticals and improving old ones. "This is a technology that can be applied directly to many medicinally relevant ...

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New, inexpensive production materials boost promise of hydrogen fuel

25-02-2014

Generating electricity is not the only way to turn sunlight into energy we can use on demand. The sun can also drive reactions to create chemical fuels, such as hydrogen, that can in turn power cars, trucks and trains. The trouble with solar fuel production is the cost of producing the ...

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Solar-induced hybrid fuel cell produces electricity directly from biomass

20-02-2014

Although low temperature fuel cells powered by methanol or hydrogen have been well studied, existing low temperature fuel cell technologies cannot directly use biomass as a fuel because of the lack of an effective catalyst system for polymeric materials. Now, researchers at the Georgia Institute ...

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