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Beyond 'Nano': A Scale That Weighs Viruses

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ITHACA, N.Y., April 7 -- Researchers have already been able to detect the mass of a single cell using submicroscopic devices. Now they're zeroing in on viruses. And the scale of their work is becoming so indescribably small, they have moved beyond the prefixes "nano" "pico" and "femto" to "atto." And just in sight is "zepto." A Cornell University research group, headed by engineering professor Harold Craighead, has used tiny oscillating cantilevers to detect masses as small as 6 attograms by noting the change an added mass produces in the frequency of vibration. These submicroscopic devices,...Read full article

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    Published: April 2004
    attogramsCornell UniversityfemtogramMicroscopynanoelectromechanical systemsnanometersNEMSNews & Featuressubmicroscopic devices

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