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Spray-On Flat Lens Works in the UV

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GAITHERSBURG, Md., May 24, 2013 — A metamaterial-based flat lens that's easy to fabricate and that can bend and focus UV light could improve photolithography, nanoscale manipulation and manufacturing, and even high-resolution 3-D imaging, say scientists at the National Institute of Standards and Technology (NIST). The new lens is formed by making a simple sandwich of alternating nanometer-thick layers of silver and titanium dioxide. The resulting flat slab is a metamaterial — a man-made substance with a negative index of refraction: Light entering or exiting the material bends in a direction opposite what would...Read full article

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    Published: May 2013
    Glossary
    aperture
    An opening or hole through which radiation or matter may pass.
    metamaterial
    Metamaterials are artificial materials engineered to have properties not found in naturally occurring substances. These materials are designed to manipulate electromagnetic waves in ways that are not possible with conventional materials. Metamaterials typically consist of structures or elements that are smaller than the wavelength of the waves they interact with. Key characteristics of metamaterials include: Negative refraction index: One of the most notable features of certain...
    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.
    camerasAmericasapertureBasic ScienceBritish Columbiaflat lensHenri LezecImagingindustrialKenneth ChaulensesMarylandMaterials & ChemicalsmetamaterialMicroscopynanoNational Institute of Standards and Technologynegative refractionnegative-indexNISTOpticsrefractiverefractive-indexResearch & Technologyspray-onUVVictor Veselago

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