Improved Nanodots Could Be Key to Future Data Storage

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False-color image of 50-nanometer cobalt-palladium nanodots made with a magnetic force microscope provides both topographic and magnetic profiles. The darker dots are magnetized in the up direction (representing 1 in binary code) and the lighter dots ...
False-color image of 50-nanometer cobalt-palladium nanodots made with a magnetic force microscope provides both topographic and magnetic profiles. The darker dots are magnetized in the up direction (representing 1 in binary code) and the lighter dots are pointing down (representing 0). Credit: NIST

The massive global challenge of storing digital data--storage needs reportedly double every year--may be met with a tiny yet powerful solution: magnetic particles just a few billionths of a meter across. This idea is looking better than ever now that researchers at the National Institute of Standards and Technology (NIST) and collaborators have made nanodot arrays that respond to magnetic fields with record levels of uniformity.


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