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Repulsive Light Force Rules

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NEW HAVEN, Conn., July 13, 2009 – Nanodevices could one day be controlled by light rather than by electricity thanks to the discovery of ‘repulsive’ light forces, which can be used to control components on silicon chips. The discovery was made by a team of Yale University researchers, who had previously discovered an ‘attractive’ force of light and showed how it could be manipulated to move components in semiconducting micro- and nanoelectrical systems – tiny mechanical switches on a chip. The scientists have now uncovered a complementary repulsive force. Tang's team shows how interacting lightwaves can be used to...Read full article

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    Published: July 2009
    Glossary
    light
    Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Attractive Light Forcesbipolar light forceCommunicationsdefenseHong Tanginfrared lightinteracting lightwaveslightlight beamsLight Sourceslights radiation pressuremechanical switches on a chipMo Linanonanodevicesnanoscale switchNews & FeaturesphotonicsRepulsive Light ForcesResearch & Technologysemiconducting micro-electrical systemssemiconducting nano-electrical systemssilicon chipsTest & MeasurementUS Defense Advanced Research Projects AgencyYoung Faculty Award from the National Science FoundationLEDs

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