Experimental Verification of a Negative Index of Refraction
@article{Shelby2001ExperimentalVO, title={Experimental Verification of a Negative Index of Refraction}, author={Richard A. Shelby and D. Robert Smith and Sheldon Schultz}, journal={Science}, year={2001}, volume={292}, pages={77 - 79} }
We present experimental scattering data at microwave frequencies on a structured metamaterial that exhibits a frequency band where the effective index of refraction (n) is negative. The material consists of a two-dimensional array of repeated unit cells of copper strips and split ring resonators on interlocking strips of standard circuit board material. By measuring the scattering angle of the transmitted beam through a prism fabricated from this material, we determine the effective n…
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References
SHOWING 1-10 OF 28 REFERENCES
Microwave transmission through a two-dimensional, isotropic, left-handed metamaterial
- Physics
- 2001
We present experimental data, numerical simulations, and analytical transfer-matrix calculations for a two-dimensionally isotropic, left-handed metamaterial (LHM) at X-band microwave frequencies. A…
Composite medium with simultaneously negative permeability and permittivity
- PhysicsPhysical review letters
- 2000
We demonstrate a composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime…
Negative refraction makes a perfect lens
- PhysicsPhysical review letters
- 2000
The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across.
Anomalous refractive properties of photonic crystals
- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
- 2000
We describe methods of investigating the behavior of photonic crystals. Our approach establishes a link between the dispersion relation of the Bloch modes for an infinite crystal (which describes the…
Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap
- Physics
- 2000
Although light propagation in weakly modulated photonic crystals is basically similar to propagation in a diffraction grating in which conventional refractive index loses its meaning, we demonstrate…
Magnetism from conductors and enhanced nonlinear phenomena
- Physics
- 1999
We show that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu//sub eff/, which can be tuned to values not accessible in naturally occurring…
Extremely low frequency plasmons in metallic mesostructures.
- PhysicsPhysical review letters
- 1996
A mechanism for depression of the plasma frequency into the far infrared or even GHz band is proposed: Periodic structures built of very thin wires dilute the average concentration of electrons and considerably enhance the effective electron mass through self-inductance.
Negative refractive index in left-handed materials.
- PhysicsPhysical review letters
- 2000
The regime of negative index, made relevant by a recent demonstration of an effective LHM, leads to unusual electromagnetic wave propagation and merits further exploration.
Phys
- Rev. B 62,
- 1069