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Nanotechnology General News

The latest news from academia, regulators
research labs and other things of interest

Spintronics: A high wire act

Ferromagnetic iron germanide nanowires grown on graphene could serve as spin injection contacts for graphene-based spintronics.

Posted: Jul 25th, 2011

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Nanofiber arrays dramatically boost batteries' energy storage

MIT researchers have found a way to improve the energy density of a type of battery known as lithium-air (or lithium-oxygen) batteries, producing a device that could potentially pack several times more energy per pound than the lithium-ion batteries that now dominate the market for rechargeable devices in everything from cellphones to cars.

Posted: Jul 25th, 2011

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Soft spheres settle in somewhat surprising structure

Latex paints and drug suspensions such as insulin or amoxicillin that do not need to be shaken or stirred may be possible thanks to a new understanding of how particles separate in liquids, according to Penn State chemical engineers, who have developed a method for predicting the way colloidal components separate based on energy.

Posted: Jul 24th, 2011

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Nanoplasmonic 'whispering gallery' breaks emission time record in semiconductors

Renaissance architects demonstrated their understanding of geometry and physics when they built whispering galleries into their cathedrals. These circular chambers were designed to amplify and direct sound waves so that, when standing in the right spot, a whisper could be heard from across the room. Now, scientists at the University of Pennsylvania have applied the same principle on the nanoscale to drastically reduce emission lifetime, a key property of semiconductors, which can lead to the development of new ultrafast photonic devices.

Posted: Jul 22nd, 2011

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Nanomembranes promise new materials for advanced electronics

University of Wisconsin-Madison materials science and engineering researchers have introduced innovations that could make possible a wide range of new crystalline materials. They describe a new approach for using thin sheets of semiconductor known as nanomembranes.

Posted: Jul 22nd, 2011

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Food safety could benefit from modified metals that change color

Modified metals that change colour in the presence of particular gases could warn consumers if packaged food has been exposed to air or if there's a carbon monoxide leak at home. This finding could potentially influence the production of both industrial and commercial air quality sensors.

Posted: Jul 21st, 2011

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Nanotechnology for water filtration

Among many potential applications, carbon nanotubes are great candidate materials for cleaning polluted water. Many water pollutants have very high affinity for carbon nanotubes and pollutants could be removed from contaminated water by filters made of this nanomaterial, for example water soluble drugs which can hardly be separated from water by activated carbon.

Posted: Jul 21st, 2011

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