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  • Stretchable, serpentine lithium-ion battery works at three times its usual size

    Stretchable, serpentine lithiumion battery works at three times its size

    While we’ve seen more than a few flexible batteries in our day, they’re not usually that great at withstanding tugs and pulls. A team-up between Northwestern University and the University of Illinois could give lithium-ion batteries that extreme elasticity with few of the drawbacks you’d expect. To make a stretchable battery that still maintains a typical density, researchers built electrode interconnects from serpentine metal wires that have even more wavy wires inside; the wires don’t require much space in normal use, but will unfurl in an ordered sequence as they’re pulled to their limits. The result is a prototype battery that can expand to three times its normal size, but can still last for eight to nine hours. It could also charge wirelessly, and thus would be wearable under the skin as well as over — imagine fully powered implants where an external battery is impractical or unsightly. There’s no word yet on whether there will be refined versions coming to real-world products, but we hope any developments arrive quickly enough to give stretchable electronics a viable power source.

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    Via: ScienceDaily

    Source: Nature

  • Nintendo’s stork to deliver 3DS models in blue and pink to Japan

    Nintendo's stork brings twin 3DS models in pink and blue

    If you’re a gamer and love you some bright colors, Nintendo‘s got just the bundle of joy with a couple of new 3DS models. “Pink Gloss” and “Light Blue” colors will arrive to the handheld console on March 20th along with a boost in memory from the usual 2GB to 4GB for 15,000 yen (about $160). The rug might be pulled from under your brightly-hued dreams if you’re not in Japan, though — only players in that country will be able to nab it.

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    Via: Engadget.jp

    Source: Nintendo Japan (translated)

  • NTT DoCoMo confirms successful 10Gbps wireless test, clears a path to 5G

    NTT DoCoMo confirms successful 10Gbps wireless test, paves the way to 5G

    No, it’s not the world’s most conspicuous surveillance van — it’s one of the first steps toward 5G data. NTT DoCoMo has just confirmed that the gear-laden vehicle above successfully conducted a 10Gbps wireless test in Ishigaki this December with the help of the Tokyo Institute of Technology. The dry run relied on frequencies and bandwidth well outside of usual cellular service, in the 11GHz band with 400MHz of spectrum, but proved that it was possible to blow past the speeds of LTE and LTE-Advanced while moving outdoors; the test used 24 antennas to maintain the link. DoCoMo ultimately hopes for similar speed in frequencies over 5GHz, and it’s not shy about hoping the technology will define mobile communication as it improves. Although we’re not expecting this kind of breakneck performance in a phone for years, it’s good to know that 4G isn’t necessarily the end of the line.

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    Source: NTT DoCoMo

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