Composite material with conductive structures of random size, shape, orientation, or location
AssigneeHewlett-Packard Development Company, L.P.
InventorsShih-Yuan Wang, Alexandre Bratkovski
Life of this patent
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Abstract
A composite material with at least one of a negative effective permittivity and a negative effective permeability for incident radiation of at least one wavelength is described. The composite material comprises conductive structures that are substantially random with respect to at least one of size, shape, orientation, and location.
Claims30
A composite material with at least one of a negative effective permittivity and a negative effective permeability for incident radiation of at least one wavelength comprising conductive structures that are substantially random with respect to at least one of size, shape, orientation, and location and that have a minor dimension less than about one fiftieth of said incident radiation wavelength, wherein said incident radiation wavelength corresponding to one of an optical, near-infrared, and far infrared frequency range, said composite material further comprising a quantum well gain material having an amplification band that includes said incident radiation wavelength, said quantum well gain material being conformally grown around each of said conductive structures.
A composite material with at least one of a negative effective permittivity and a negative effective permeability for incident radiation of at least one wavelength, comprising:
- a matrix material;
- and
- a plurality of conductive structures disposed in said matrix material, said conductive structures being substantially random with respect to at least one of size, shape, orientation, and location and having a minor dimension substantially smaller than said incident radiation wavelength;
- wherein said matrix material exhibits gain in an amplification band that includes said incident radiation wavelength.
A method for propagating incident electromagnetic radiation at an operating wavelength, comprising placing a composite material in the path of the incident electromagnetic radiation, the composite material having at least one of a negative effective permittivity and a negative effective permeability at said operating wavelength, the composite material comprising conductive structures that are substantially random with respect to at least one of size, shape, orientation, and location and that have a minor dimension less than about one-fiftieth of said operating wavelength, wherein said operating wavelength corresponding to one of an optical, near-infrared, and far infrared frequency rang, said composite material further comprising a quantum well gain material having an amplification band that includes said operating wavelength, said quantum well gain material being conformally grown around each of said conductive structures.
A method for propagating incident electromagnetic radiation at an operating wavelength, comprising placing a composite material in the path of the incident electromagnetic radiation, the composite material having at least one of a negative effective permittivity and a negative effective permeability at the operating wavelength, the composite material comprising a plurality of conductive structures disposed in a matrix material that exhibits gain at said operating wavelength, said conductive structures being substantially random with respect to at least one of size, shape, orientation, and location and having a minor dimension substantially smaller than said operating wavelength.
A device fin propagating incident radiation at an operating wavelength, comprising:
- a matrix material;
- a plurality of conductive structures disposed in said matrix material, said conductive structures being substantially random with respect to at least one of size, shape, orientation, and location and having a minor dimension substantially smaller than said incident radiation wavelength such that at least one of a negative effective permittivity and a negative effective permeability are exhibited at said operating wavelength;
- means disposed in said matrix material for providing gain at said operating wavelength;
- and
- means for powering said means for providing gain.
Dependencies are inferred from the claim text.