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      Direct observation of negative refraction at the millimeter-wave regime by using a flat composite metamaterial

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      Author
      Alici K. B.
      Özbay, Ekmel
      Date
      2009
      Source Title
      Journal of the Optical Society of America B: Optical Physics
      Print ISSN
      0740-3224
      Electronic ISSN
      1520-8540
      Publisher
      Optical Society of America
      Volume
      26
      Issue
      9
      Pages
      1688 - 1692
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      We studied the transmission characteristics of a one-dimensional metamaterial slab operating at the millimeter-wave regime. The double-negative nature was proven by using a normal incidence transmission study. A split-ring resonator based metamaterial flat lens with five layers at the propagation direction was constructed and illuminated with oblique incidence. From the scanning experiments, the shifting of the beam to the negative side was observed. The experimental results are in agreement with the Drude-Lorentz model based simulations. Two-dimensional field maps that were obtained from these simulations demonstrated negative refraction, negative phase velocity, and the reflected beam properties at 99 GHz.
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      http://hdl.handle.net/11693/22641
      Published Version (Please cite this version)
      https://doi.org/10.1364/JOSAB.26.001688
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      • Nanotechnology Research Center (NANOTAM) 1006
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