Metamaterials
First Claim
Patent Images
1. A metamaterial lens comprising:
- a dielectric host supporting at least one lattice of elements and configured to form a metamaterial having a negative permeability and permittivity, at least a portion of said metamaterial forming a grating structure configured to alter the direction electromagnetic waves incident thereon.
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Abstract
One exemplary metamaterial is formed from a plurality of individual unit cells, at least a portion of which have a different permeability than others. The plurality of individual unit cells are arranged to provide a metamaterial having a gradient index along at least one axis. Such metamaterials can be used to form lenses, for example.
158 Citations
20 Claims
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1. A metamaterial lens comprising:
a dielectric host supporting at least one lattice of elements and configured to form a metamaterial having a negative permeability and permittivity, at least a portion of said metamaterial forming a grating structure configured to alter the direction electromagnetic waves incident thereon. - View Dependent Claims (2)
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3. An artificially structured composite metamaterial having spatially varying electromagnetic properties comprising:
a dielectric host supporting a plurality of elements that form a composite metamaterial, at least a portion of said elements differing in one or both of their electric or magnetic polarization from others of said plurality of elements wherein said composite metamaterial exhibits a spatial variation in one or more of permittivity and permeability along one or more axes, said permeability variation being independent from said permittivity. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for forming a composite metamaterial having a spatial gradient of electromagnetic response comprising the steps of:
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forming a plurality of repeated unit cells, each of said unit cells comprising a dielectric supporting a plurality of conductors, each of said plurality of repeated unit cells having conductor dimensions and dielectric dimensions; causing a portion of said repeated unit cells to have an effective permeability different from others of said repeated unit cells by varying one or more of said conductor dimensions and said dielectric dimensions; and
,arranging said portion of said plurality of unit cells to form a metamaterial having a gradient index of effective permeability along at least one direction.
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10. A metamaterial lens having a gradient refractive index n comprising:
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a dielectric host supporting a plurality of individual elements, each of said individual elements having electric and magnetic polarizations, said dielectric host and said plurality of individual elements forming a metamaterial; and
,said dielectric host and said plurality of individual elements being arranged to provide a varying refractive effective index along at least one axis and to focus electromagnetic radiation incident on said metamaterial. - View Dependent Claims (11, 12)
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13. A composite metamaterial comprising:
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a plurality of unit cells, each unit cell comprising; a plurality of dielectric polymer layers in a stacked arrangement; a first split ring conductor extending across said plurality of stacked dielectric polymer layers; at least one substantially straight conductor element supported on one of said plurality of dielectric polymer layers; and
,wherein said plurality of unit cells are configured to define a metamaterial. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A modular metamaterial comprising:
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at least one generally planar base dielectric substrate having at least one first connector; a plurality of second generally planar dielectric substrates having at least one second connector configured to cooperate with said at least one first connector to connect said at least one second generally planar dielectric substrate at an angle of substantially 90°
to said at least one generally base dielectric substrate, and each of said plurality of second generally planar dielectric substrates having at least one third connector for cooperating with others of said plurality of second generally planar dielectric substrates having at least one third connectors to connect said plurality of second generally planar dielectric substrates to one another at an angle of substantially 90°
; andeach of said at least one generally planar base dielectric substrate and said at least one second generally planar dielectric substrate having a plurality of first conductors arranged in an array, wherein said at least one generally planar base dielectric substrate and said at least one second generally planar dielectric substrate form a three dimensional metamaterial when connected together. - View Dependent Claims (20)
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Specification