Spatial mapping of the internal and external electromagnetic fields of negative index metamaterials.

@article{Justice2006SpatialMO,
  title={Spatial mapping of the internal and external electromagnetic fields of negative index metamaterials.},
  author={B. J. Justice and Jack J. Mock and Liheng Guo and Aloyse Degiron and David Schurig and David R. Smith},
  journal={Optics express},
  year={2006},
  volume={14 19},
  pages={
          8694-705
        }
}
We perform an experimental study of the phase and amplitude of microwaves interacting with and scattered by two-dimensional negative index metamaterials. The measurements are performed in a parallel plate waveguide apparatus at X-band frequencies (8-12 GHz), thus constraining the electromagnetic fields to two dimensions. A detection antenna is fixed to one of the plates, while a second plate with a fixed source antenna or waveguide is translated relative to the first plate. The detection… 

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References

SHOWING 1-10 OF 28 REFERENCES

Impact of inherent periodic structure on effective medium description of left-handed and related metamaterials

We study the frequency dependence of the effective electromagnetic parameters of left-handed and related metamaterials of the split ring resonator and wire type. We show that the reduced

Experimental characterization of magnetic surface plasmons on metamaterials with negative permeability

We study the surface plasmons (SPs) that exist at the interface between air and a metamaterial constructed of split ring resonators (SRRs). The SRR metamaterial possesses a frequency band in the

Experimental Verification of a Negative Index of Refraction

These experiments directly confirm the predictions of Maxwell's equations that n is given by the negative square root ofɛ·μ for the frequencies where both the permittivity and the permeability are negative.

Resonant and antiresonant frequency dependence of the effective parameters of metamaterials.

A numerical study of the electromagnetic response of the metamaterial elements that are used to construct materials with negative refractive index finds that the resonant behavior of the effective magnetic permeability is accompanied by an antiresonant behavior by an array of split ring resonators.

Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients

We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity ~«! and

Homogenization of metamaterials by field averaging (invited paper)

Over the past several years, metamaterials have been introduced and rapidly been adopted as a means of achieving unique electromagnetic material response. In metamaterials, artificially

Free space microwave focusing by a negative-index gradient lens

Metamaterial structures designed to have simultaneously negative permittivity and permeability are known as left-handed materials. Their complexity and our understanding of their properties have

Negative refraction in indefinite media

Initial experiments on wedge samples composed of isotropic metamaterials with simultaneously negative permittivity and permeability have indicated that electromagnetic radiation can be negatively

Direct measurement of evanescent wave enhancement inside passive metamaterials.

  • B. PopaS. Cummer
  • Physics
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2006
Electric-field measurements inside a negative-permeability-positive-permittivity metamaterial composed of arrays of split-ring resonators directly show that the theoretically predicted enhancement of

Wave fields measured inside a negative refractive index metamaterial

Measured spatial variations of field phase and amplitude versus position inside a wire/split ring resonator negative refractive index metamaterial are presented that show that the phase velocity