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      Experimental observation of true left-handed transmission, negative refraction and negative phase velocity in composite metamaterials

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      Author
      Özbay, Ekmel
      Soukoulis, C. M.
      Date
      2005
      Source Title
      2006 European Microwave Conference
      Publisher
      IEEE
      Pages
      555 - 558
      Language
      English
      Type
      Conference Paper
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      Abstract
      We report a true left-handed (LH) behavior in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is demonstrated by comparing the transmission spectra of SRRs with that of closed SRRs. We confirmed experimentally that the effective plasma frequency of the LH material composed of SRRs and wires is lower than the plasma frequency of the wires. A well-defined left-handed transmission band with a peak value of -1.2 dB (-0.3 dB/cm) is obtained. We also report the negative refraction characteristics of a 2D composite metamaterial (CMM) structure in free space. The experimental results agree extremely well with the theoretical calculations.
      Keywords
      Composite metamaterials
      Experimental observation
      Left-handed transmission bands
      Negative phase velocity
      Negative refractions
      Split-ring resonators (SRR)
      Theoretical calculations
      Transmission spectrums
      Electromagnetism
      Light refraction
      Magnetic resonance
      Metamaterials
      Plasma waves
      Wire
      Ring gages
      Permalink
      http://hdl.handle.net/11693/27338
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/EUMC.2006.281081
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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