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New Metamaterials Detect T-Rays

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SAN DIEGO, March 4 -- Scientists have developed a class of materials that respond magnetically to terahertz radiation, a fundamental finding relevant to many exciting applications in areas including guidance in zero visibility weather conditions, security and biomedical imaging and quality control. The materials are metamaterials -- artificially structured materials that extend the properties of existing, naturally occurring materials and compounds. The research team includes physicists and engineers from the University of California, San Diego (UCSD); the University of California, Los...Read full article

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    Published: March 2004
    Glossary
    electromagnetic spectrum
    The total range of wavelengths, extending from the shortest to the longest wavelength or conversely, that can be generated physically. This range of electromagnetic wavelengths extends practically from zero to infinity and includes the visible portion of the spectrum known as light.
    terahertz
    Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1 and 10 terahertz. One terahertz is equivalent to one trillion hertz, or cycles per second. The terahertz frequency range falls between the microwave and infrared regions of the electromagnetic spectrum. Key points about terahertz include: Frequency range: The terahertz range spans from approximately 0.1 terahertz (100 gigahertz) to 10 terahertz. This corresponds to...
    defenseelectromagnetic spectrumImperial Collegeleft-handed metamaterialsMaterialsmetamaterialsMicroscopyNews & FeaturesT-raysterahertzUniversity of California

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