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'Spaser' Shakes Up the Nanoworld

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Hank Hogan

Researchers at Georgia State University in Atlanta and Tel Aviv University in Israel have proposed a device based on surface plasmons to shake things up in very small systems. In a manner analogous to the way a laser operates, the "spaser" (surface plasmon amplification by stimulated emission of radiation) would amplify a specific surface plasmon excitation mode using a metallic particle as a resonant cavity. Excited optically, electrically or chemically, the quantum dots in the proposed spaser would generate surface plasmons. The metallic nanostructure would amplify and accumulate the...Read full article

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    Published: March 2003
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    astronomyBasic Sciencemetallic particleResearch & Technologyresonant cavitysurface plasmon amplification by stimulated emission of radiationsurface plasmons

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