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Three-dimensional broadband ground-plane cloak made of metamaterials

Cui, Tie Jun ; Ma, Hui Feng

Nature communications, 2010-06, Vol.1 (1), p.21-21, Article 21 [Revista revisada por pares]

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Título:
Three-dimensional broadband ground-plane cloak made of metamaterials
Autor: Cui, Tie Jun ; Ma, Hui Feng
Materias: Computer Simulation ; Optics and Photonics
Es parte de: Nature communications, 2010-06, Vol.1 (1), p.21-21, Article 21
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descripción: Since invisibility cloaks were first suggested by transformation optics theory, there has been much work on the theoretical analysis and design of various types and a few experimental verifications at microwave and optical frequencies within two-dimensional limits. Here, we realize the first practical implementation of a fully 3D broadband and low-loss ground-plane cloak at microwave frequencies. The cloak, realized by drilling inhomogeneous holes in multi-layered dielectric plates, can conceal a 3D object located under a curved conducting plane from all viewing angles by imitating the reflection of a flat conducting plane. We also designed and realized, using non-resonant metamaterials, a high-gain lens antenna that can produce narrow-beam plane waves in the near-field region in a broad frequency band. The antenna constitutes the transmitter of the measurement system and is essential for the measurement of cloaking behaviour.
Editor: England: Nature Publishing Group
Idioma: Inglés

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