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Nanotechnology General News

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

Complexity of grain boundaries in ceramics: electrons reveal it all

Scientists describe how they have been able to unravel the structure of grain boundary defects in ceramics with both atomic resolution and chemical sensitivity by combining advanced electron microscopy techniques with theoretical simulations. Their findings shed new light onto these universally important defects and demonstrate that their structure can be much more complex than is often assumed.

Posted: Nov 29th, 2011

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Researchers discover new nanoscale electronic state on graphene sheets

Researchers from the London Centre for Nanotechnology have discovered electronic stripes, called 'charge density waves', on the surface of the graphene sheets that make up a graphitic superconductor. This is the first time these stripes have been seen on graphene, and the finding is likely to have profound implications for the exploitation of graphene.

Posted: Nov 29th, 2011

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Imperfections may improve graphene sensors

Although they found that graphene makes very good chemical sensors, researchers at Illinois have discovered an unexpected "twist" - that the sensors are better when the graphene is "worse" - more imperfections improved performance.

Posted: Nov 29th, 2011

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The interplay of dancing electrons

Negative ions play an important role in everything from how our bodies function to the structure of the universe. Scientists from the University of Gothenburg, Sweden, have now developed a new method that makes it possible to study how the electrons in negative ions interact in, which is important in, for example, superconductors and in radiocarbon dating.

Posted: Nov 29th, 2011

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Big success with tiny crystals

Tiny crystals exhibit unexpected properties. Researchers from the Vienna University of Technology and the University of Calcutta can now explain why.

Posted: Nov 29th, 2011

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Zehn Jahre Forschung an Nanomaterialien zu Nanorisiken

Um weitere, dringend benoetigte Studien im Bereich Nano(oeko)toxikologie durchzufuehren, mangelt es an ExpertInnen. Zudem bestehen noch etliche, teils erhebliche Wissensluecken. So lautet das Fazit zweier Berichte, die kuerzlich vorgestellt wurden.

Posted: Nov 29th, 2011

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The art of stabilizing entangled spaghetti-like materials

Gene therapy can only be effective if delivered by a stable complex molecule. Now, scientists have determined the conditions that would stabilise complex molecular structures that are subject to inherent attractions and repulsions triggered by electric charges at the surfaces of the molecules.

Posted: Nov 29th, 2011

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Bright future for gallium nitride nanowires

The gallium nitride nanowires grown by scientists in the Physical Measurement Laboratory at NIST may only be a few tenths of a micrometer in diameter, but they promise a very wide range of applications, from new light-emitting diodes and diode lasers to ultra-small resonators, chemical sensors, and highly sensitive atomic probe tips.

Posted: Nov 29th, 2011

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Better thermal management promises cheaper, greener, cooler electronics

Efforts in the 'Nano packaging technology for interconnect and heat dissipation' (Nanopack) project have resulted in new 'Thermal interface materials' (TIMs) developed with micro- and nanotechnology to greatly increase heat transfer away from chips and other electronic components, in turn reducing the demands placed on cooling systems, lowering costs and reducing energy consumption.

Posted: Nov 28th, 2011

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DFG bewilligt Forschergruppe "Internano"

Die Deutsche Forschungsgemeinschaft (DFG) hat die Einrichtung der Forschergruppe "INTERNANO: Mobility, aging and functioning of engineered inorganic nanoparticles at the aquatic-terrestrial interface" bewilligt.

Posted: Nov 28th, 2011

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