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Li-on batteries gradually deteriorate
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Because the world keeps getting more bizarre, it turns out that the best way to get these microbots to navigate around obstacles is to smear them with the bacteria that causes urinary tract infections and send them through an electrical grid. See a demonstration!
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Spider silk is natureâ€™s Kevlar. Itâ€™s stronger than steel, itâ€™s waterproof, and you can stretch it as much as 30 to 40 percent before it snaps. Now biophysicists at Johns Hopkins University think they know the secret to spider silkâ€™s remarkable elasticity: protein threads that serve as stretchy â€śsuperstrings.â€ť The researchers describe their work in a recent paper in the journal Nano Letters.
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Some men produce sperm that are poor swimmers, a major cause of infertility. To help, researchers from Germany have developed motorized cyborg â€śspermbotsâ€ť that can be guided directly to an egg.
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Energy-saving bulbs may have some competition in the shape of an ageing technology. Scientists have developed a new kind of incandescent light bulb that uses modern science to ramp up its efficiency, almost matching that of commercial LED bulbs.
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Hoverboards wonâ€™t stop exploding lately
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The medical profession has long dreamed of an ideal delivery system for getting drugs to wherever in the body theyâ€™re needed most. Nanoscientists at the University of San Diego have come up with a novel means of doing so: why not fire the drugs at the intended targets, using tiny little cannons?
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Combining art and science comes naturally to Kate Nichols. The colors in her pieces donâ€™t come from pigment, but from tiny silver nanoparticles suspended in the paint. She makes them herself, as artist-in resident in the University of California, Berkeleyâ€™s nanotechnology research group.
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A new printing method lets us make images smaller than weâ€™ve ever before managed â€” much smaller than the width of the average human hair. Whatâ€™s more, these images are in color.
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