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Electrically controlling the optical properties of carbon nanotube at visible wavelengths

Smart glass can change color or even go from opaque to transparent with just the flick of a switch. Indium tin oxide is used as an electrical contact in many of these 'electrochromic' devices because it is both transparent to visible light and a good conductor of electricity. But indium and tin are both becoming increasingly expensive as the global supply diminishes. Researchers have now shown that carbon could be the perfect replacement.

Posted: Jul 19th, 2011

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Graphene oxide: a new order

A liquid crystal-like transition between isotropic and nematic phases in liquid suspensions of graphene oxide holds promise for a range of applications.

Posted: Jul 19th, 2011

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Bacteria use Batman-like grappling hooks to 'slingshot' on surfaces

Bacteria use various appendages to move across surfaces prior to forming multicellular bacterial biofilms. Some species display a particularly jerky form of movement known as "twitching" motility, which is made possible by hairlike structures on their surface called type IV pili, or TFP.

Posted: Jul 19th, 2011

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Nanoparticles working in harmony

A team of researchers from MIT, the Sanford-Burnham Medical Research Institute, and the University of California at San Diego (UCSD) has designed a new type of delivery system in which a first wave of nanoparticles hones in on the tumor, then calls in a much larger second wave that dispenses the cancer drug. This communication between nanoparticles, enabled by the body's own biochemistry, boosted drug delivery to tumors by more than 40-fold in a mouse study.

Posted: Jul 15th, 2011

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