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Optical techniques for accurately determining the toxicity of nanomaterials

EPFL researchers have developed a method for accurately determining the toxicity of nanomaterials. By using optical techniques, they are able to measure the concentration of the oxidizing substances produced by a damaged cell. Furthermore, this research also offers a new way to know more about the mechanisms of oxidative stress.

Posted: Dec 9th, 2013

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Electrical control of single atom magnets

The energy needed to change the magnetic orientation of a single atom - which determines its magnetic stability and therefore its usefulness in a variety of future device applications - can be modified by varying the atom's electrical coupling to nearby metals.

Posted: Dec 8th, 2013

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Characterizing solar cells with nanoscale precision using a low-energy electron beam

Researchers have demonstrated a new low energy electron beam technique and used it to probe the nanoscale electronic properties of grain boundaries and grain interiors in cadmium telluride (CdTe) solar cells. Their results suggest that controlling material properties near the grain boundaries could provide a path for increasing the efficiency of such solar cells.

Posted: Dec 6th, 2013

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Squeezing transistors really hard generates energy savings

If silicon is squeezed, this affects the freedom of movement of the electrons in this material. This can promote or restrict the flow of electrical current. Compare it to a garden hose. When you stand on it, less water comes out. But strangely enough, the flow of electrons in silicon actually increases when the material is compressed.

Posted: Dec 6th, 2013

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Group talks cyber, nanotechnology in Stockholm

Cyber and nanotechnologies took full focus for 26 of the Partnership for Peace Consortium's Emerging Security Challenges Working Group during a two-day workshop hosted at the Swedish National Defense College in Stockholm November 20-22.

Posted: Dec 6th, 2013

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