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New Invisibility Cloak Made of Glass

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HOUGHTON, Mich., Aug. 2, 2010 — From Tolkien’s ring of power in “The Lord of the Rings” to Star Trek’s Romulans, who could make their warships disappear from view, from Harry Potter’s magical cloak to the garment that makes players vanish in the classic game “Dungeons and Dragons,” the power to turn someone or something invisible has fascinated mankind. But who ever thought that a scientist at Michigan Technological University would be serious about building a working invisibility cloak? A glass cloak designed to hide a metal cylinder. The upper inset shows the distances...Read full article

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    Published: August 2010
    Glossary
    chalcogenide
    Chalcogenide refers to a class of compounds containing elements from group 16 of the periodic table, which includes sulfur (S), selenium (Se), and tellurium (Te). These elements are known as chalcogens. Chalcogenides are typically formed by combining one or more chalcogens with other elements, such as metals or metalloids. Chalcogenides are of particular interest in materials science and technology due to their unique properties, which include: Semiconductor behavior: Many chalcogenides...
    dielectric
    Exhibiting the characteristic of materials that are electrical insulators or in which an electric field can be sustained with a minimum dispersion of power. They exhibit nonlinear properties, such as anisotropy of conductivity or polarization, or saturation phenomena.
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    AmericasApplied Physics LettersCarlo Pantanoceramic resonatorschalcogenidedielectricDouglas WernerElena SemouchkinaGeorge Semouchkinglass resonatorsImaginginfraredinvisibility cloakmagnetic resonancemetamaterialsMichigan TechMichigan Technological UniversitymicrowavesOpticsPenn StatePennsylvania State UniversityResearch & Technology

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