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Quantum waves at the heart of organic solar cells

By using an ultrafast camera, scientists say they have observed the very first instants following the absorption of light into artificial yet organic nanostructures and found that charges not only formed rapidly but also separated very quickly over long distances - phenomena that occur due to the wavelike nature of electrons which are governed by fundamental laws of quantum mechanics.

Posted: Dec 12th, 2013

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Low-power tunneling transistor for high-performance devices at low voltage

A new type of transistor that could make possible fast and low-power computing devices for energy-constrained applications such as smart sensor networks, implantable medical electronics and ultra-mobile computing is feasible. Called a near broken-gap tunnel field effect transistor, the new device uses the quantum mechanical tunneling of electrons through an ultrathin energy barrier to provide high current at low voltage.

Posted: Dec 12th, 2013

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Graphene-based nano-antennas may enable networks of tiny machines

Networks of nanometer-scale machines offer exciting potential applications in medicine, industry, environmental protection and defense, but until now there's been one very small problem: the limited capability of nanoscale antennas fabricated from traditional metallic components.

Posted: Dec 12th, 2013

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Tables turn as nature imitates art

There are exam­ples of art imi­tating nature all around us - the human con­cep­tion of nat­ural phe­nomena daz­zles but does not often surprise. Yet when a researcher peered under the elec­tron micro­scope last fall, she dis­cov­ered the exact oppo­site. Instead of art imi­tating nature, she found nature imi­tating art.

Posted: Dec 11th, 2013

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How do silver nanoparticles impact the composting of municipal solid waste?

A new study evaluates the impact of polyvinylpyrrolidone coated silver nanoparticles on the composting of municipal solid waste. The findings suggest that at relatively low concentrations, the organically rich waste management systems' functionality may not be influenced by the presence of silver nanoparticles.

Posted: Dec 11th, 2013

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