Metamaterial Electromagnetic Cloak at Microwave Frequencies

@article{Schurig2006MetamaterialEC,
  title={Metamaterial Electromagnetic Cloak at Microwave Frequencies},
  author={David Schurig and Jack J. Mock and B. J. Justice and Steven A. Cummer and John Brian Pendry and Anthony Starr and D. Robert Smith},
  journal={Science},
  year={2006},
  volume={314},
  pages={977 - 980}
}
A recently published theory has suggested that a cloak of invisibility is in principle possible, at least over a narrow frequency band. We describe here the first practical realization of such a cloak; in our demonstration, a copper cylinder was “hidden” inside a cloak constructed according to the previous theoretical prescription. The cloak was constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies. The cloak decreased… 
View on AAAS
people.ee.duke.edu
6,077 Citations
Highly Influential Citations
108
Background Citations
1,274
Methods Citations
273
Results Citations
17

6,077 Citations

Citation Type

Citation Type

Low scattering microwave cloaking by all-dielectric metamaterials
The design of a cylindrical transmission cloak that provides low scattering cross width (SCW) at microwave frequencies is proposed. The cloak is composed of concentric layers of identical dielectric…
Implementation of Low Scattering Microwave Cloaking by All-Dielectric Metamaterials
We present a cylindrical microwave cloak, which provides low total scattering cross width (TSCW) for cloaked objects larger than the wavelength. The cloak is composed of identical dielectric…
Broadband electromagnetic cloaking of long cylindrical objects.
TLDR
This Letter presents an experimental demonstration of cloaking for microwaves and simulation results for cloaking in the visible range and uses a simple structure made of metal layers to demonstrate a wideband and low-loss cloak.
In-band metamaterial cloak based on the interplay of absorption and transmission
A microwave metamaterial shelter with an electromagnetic narrow window over a broad absorption spectrum is experimentally demonstrated by resorting to conventional impedance-matching theory and…
A Microwave Invisibility Cloak: The Design, Simulation, and Measurement of a Simple and Effective Frequency-Selective Surface-Based Mantle Cloak
In recent years, there has been a growing interest in developing invisibility cloaks that can conceal an object. These techniques are often based either on coating a dielectric or conducting object…
Microwave cloaking by all-dielectric metamaterials
We present a cylindrical electromagnetic cloak composed of identical ceramic dielectric resonators for operation in the microwave range. The performance of the cloak has been verified by full-wave…
Towards active dispersionless ENZ metamaterial for cloaking applications
Two-dimensional metamaterial structure exhibiting reduced visibility at 500 nm.
TLDR
An experimental two-dimensional reduced visibility structure that approximates the distribution of the radial component of the dielectric permittivity necessary to achieve nonmagnetic cloaking in the visible frequency range is reported.
Three-dimensional broadband ground-plane cloak made of metamaterials
TLDR
The first practical implementation of a fully 3D broadband and low-loss ground-plane cloak at microwave frequencies is realized, realized by drilling inhomogeneous holes in multi-layered dielectric plates.
A quasistatic magnetic cloak
Cloaking a three-dimensional object in free space from electromagnetic waves has recently become a theoretical possibility, although practical implementations can only be made in reduced schemes. If…
...
...

References

SHOWING 1-10 OF 56 REFERENCES
Controlling Electromagnetic Fields
TLDR
This work shows how electromagnetic fields can be redirected at will and proposes a design strategy that has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
Spatial mapping of the internal and external electromagnetic fields of negative index metamaterials.
TLDR
From the measured mappings of the electric field, the interplay between the microstructure of the metamaterial lattice and the macroscopic averaged response is revealed and the mapped phase fronts within a meetingamaterial having a negative refractive index are consistent with a Macroscopic phase-in accordance with the effective medium predictions.
General relativity in electrical engineering
In electrical engineering metamaterials have been developed that offer unprecedented control over electromagnetic fields. Here we show that general relativity lends the theoretical tools for…
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…
Metamaterials and Negative Refractive Index
TLDR
Recent advances in metamaterials research are described and the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena is discussed.
Achieving transparency with plasmonic and metamaterial coatings.
  • A. Alú, N. Engheta
  • Physics
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2005
TLDR
Here it is seen how a proper design of these lossless metamaterial covers near their plasma resonance may induce a dramatic drop in the scattering cross section, making these objects nearly "invisible" or "transparent" to an outside observer--a phenomenon with obvious applications for low-observability and noninvasive probe design.
Optical Conformal Mapping
TLDR
A general recipe for the design of media that create perfect invisibility within the accuracy of geometrical optics is developed, which can be applied to escape detection by other electromagnetic waves or sound.
Refraction and geometry in Maxwell's equations
Computational studies of Maxwell's equations in complex geometries encountered in photonic band structure calculations run into difficulties when several length scales occur, such as the wavelength…
Magnetism from conductors and enhanced nonlinear phenomena
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…
Robust method to retrieve the constitutive effective parameters of metamaterials.
We propose an improved method to retrieve the effective constitutive parameters (permittivity and permeability) of a slab of metamaterial from the measurement of S parameters. Improvements over…
...
...