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This is Scientific American's 60-Second Science. I'm Wayt Gibbs. Got a minute?

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It's happened to all of us.

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You're on your cell phone, your boss is saying something important, and then th..con...ction star..s to dr…p out.

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Now a team of physicists in Denmark, led by Albert Schliesser and Eugene Polzik, has demonstrated a new kind of radio tuner that is far more sensitive to faint signals.

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The technique could eventually mean fewer dropped calls, better GPS coverage, faster Wifi, and much more detailed images from MRI scanners.

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The tuner includes a novel component:

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a tiny reflective membrane just half a millimeter on a side and only a hundred nanometers thick.

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It functions in the circuit as a capacitor, and when radio waves pass through the antenna, the minuscule voltage shifts make the membrane bounce like a trampoline.

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Laser light, reflecting off the membrane and then interfering with itself, turns those nanometer-high wiggles into a strong, clear signal.

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The report is published on the site arXiv.org.

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The scientists are excited about how the technology might sharpen the pictures produced by radio telescopes.

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But wouldn't it also be nice to actually get decent phone reception inside a parking garage?

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Wayt Gibbs.

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