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

Selective CVD growth of GeSn: a new approach for implementing stress in Ge based MOSFETs

Imec reports for the first time selective chemical vapor deposition (CVD) of GeSn in a production-like environment using commercially available Ge and Sn precursors. The resulting GeSn layers with 8% Sn are defect free, fully strained and thermally stable for temperatures up to 500 C. This technique is used to implement uniaxial compressive stress in a Ge channel, the key method for reaching very high mobility values in MOSFETs.

Posted: Aug 22nd, 2011

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Etch-a-sketch with superconductors

Researchers from the London Centre for Nanotechnology and the Physics Department of Sapienza University of Rome have discovered a technique to 'draw' superconducting shapes using an X-ray beam. This ability to create and control tiny superconducting structures has implications for a completely new generation of electronic devices.

Posted: Aug 22nd, 2011

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Simulation of phenomena from optical excitation to charge splitting in organic materials for solar cells

Yoshiyuki Miyamoto from the Dynamic Process Simulation Group at the the Nanosystem Research Institute of the National Institute of Advanced Industrial Science and Technology (AIST), has performed the first-principles simulations that consistently treat from optical excitation to electron-hole splitting in a photovoltaic material formed by molecules having different electron affinities.

Posted: Aug 22nd, 2011

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Beams to order from table-top accelerators

The LOASIS program at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has already demonstrated high-quality beams up to a billion electron volts in a mere 3.3 centimeters; the BELLA project will reach 10 billion electron volts in a single meter.

Posted: Aug 22nd, 2011

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Better 'photon loops' may be key to computer and physics advances

Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers through a computer circuit. However, it may soon be possible to steer these particles of light accurately through microchips thanks to new research.

Posted: Aug 22nd, 2011

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Neuartiger Mechanismus zur Erzeugung und Nutzung von Spinstroemen

Forscher haben gezeigt, dass Spinstroeme mit Schallwellen erzeugt werden koennen. Weiterhin fanden sie, dass Spinstroeme auf isolierenden nichtmagnetischen Substraten auch durch einen weiteren Effekt, den sogenannten langreichweitigen Spin-Seebeck-Effekt erzeugt werden koennen.

Posted: Aug 22nd, 2011

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Nanowires get into the groove

Researchers have found a way to grow semiconductor nanowires out, not up, on a surface, providing, for the first time, the much-needed guidance to produce relatively long, orderly, aligned structures.

Posted: Aug 22nd, 2011

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