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Making nanotubes respond to rainbows

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Hank Hogan, [email protected]

Taking their cue from the eye, researchers have constructed a carbon nanotube that responds to all the colors of the rainbow. With some changes and more work, they could even have a nanometer-size photovoltaic device. The eye detects light through a photon-induced isomerization of a molecule. In its work, the group from Sandia National Laboratories attached azobenzene chromophores to a single-walled nanotube, with the chromophores serving as photoabsorbers and the nanotube as an electronic readout. Shown is a representation of chromophores attaching to a transistor made from a single...Read full article

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    Published: July 2009
    Glossary
    nanometer
    A unit of length in the metric system equal to 10-9 meters. It formerly was called a millimicron.
    carbon nanotubeMicroscopymoleculenanometerphoton-induced isomerizationResearch & TechnologySensors & DetectorsTech Pulse

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