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Future batteries: Lithium-sulfur with a graphene wrapper

UK-China team has designed a novel cathode for rechargeable lithium-sulfur batteries featuring a thin 'wrap sandwich' sheet of graphene

18-12-2014

What do you get when you wrap a thin sheet of the "wonder material" graphene around a novel multifunctional sulfur electrode that combines an energy storage unit and electron/ion transfer networks? An extremely promising electrode structure design for rechargeable lithium-sulfur ...

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The simplest element: Turning hydrogen into 'graphene'

18-12-2014

New work from Carnegie's Ivan Naumov and Russell Hemley delves into the chemistry underlying some surprising recent observations about hydrogen, and reveals remarkable parallels between hydrogen and graphene under extreme pressures. Their work is the cover story in the December issue of Accounts ...

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Carbon-trapping 'sponges' can cut greenhouse gases

18-12-2014

In the fight against global warming, carbon capture - chemically trapping carbon dioxide before it releases into the atmosphere - is gaining momentum, but standard methods are plagued by toxicity, corrosiveness and inefficiency. Using a bag of chemistry tricks, Cornell materials scientists have ...

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Lead islands in a sea of graphene magnetize the material of the future

17-12-2014

Researchers in Spain have discovered that if lead atoms are intercalated on a graphene sheet, a powerful magnetic field is generated by the interaction of the electrons' spin with their orbital movement. This property could have implications in spintronics, an emerging technology promoted by the ...

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Live images from inside materials

17-12-2014

In medicine, X-rays provide high-resolution images of our insides to help doctors make a definitive diagnosis. Industry uses X-rays, too - as a reliable, non-destructive way of seeing what's hidden on inside materials and components and to check for cracks or irregularities. However industry ...

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New 'high-entropy' alloy is as light as aluminum, as strong as titanium alloys

12-12-2014

Researchers from North Carolina State University and Qatar University have developed a new "high-entropy" metal alloy that has a higher strength-to-weight ratio than any other existing metal material. High-entropy alloys are materials that consist of five or more metals in approximately equal ...

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Defects are perfect in laser-induced graphene

Rice University lab discovers simple way to make material for energy storage, electronics

12-12-2014

Researchers at Rice University have created flexible, patterned sheets of multilayer graphene from a cheap polymer by burning it with a computer-controlled laser. The process works in air at room temperature and eliminates the need for hot furnaces and controlled environments, and it makes ...

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Penn researchers show commonalities in how different glassy materials fail

11-12-2014

Glass is mysterious. It is a broad class of materials that extends well beyond the everyday window pane, but one thing that these disparate glasses seem to have in common is that they have nothing in common when it comes to their internal structures, especially in contrast with highly ordered and ...

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Innovative application of metamaterials to improve radars

11-12-2014

At the International Radar Conference held in Lille (France) the researchers of the NUP/UPNA-Public University of Navarre Pablo Rodríguez-Ulibarri and Miguel Beruete-Díaz, together with their former lecturer and current CEO of Tafco Metawireless S.L., José Antonio Marcotegui-Iturmendi, have ...

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Global redistribution of phosphorus use could improve food security

How decisions in China can have a positive global impact

10-12-2014

If the use and reuse of the finite resource phosphorus as a nutrient for plants were to be handled with greater care worldwide it would become possible to produce sufficient food for the global population in and after 2050. In addition to being home to a considerable proportion of the global ...

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