ELECTROMAGNETIC WAVE CONCENTRATOR AND ABSORBER

摘要

An electromagnetic black hole may be fabricated as concentric shells having a permittivity whose variation is at least as great as an inverse square dependence on the radius of the structure. Such a structure concentrates electromagnetic energy incident thereon over a broad range of angles to an operational region near the center of curvature of the structure. Devices or materials may be placed in the operational region so as to convert the electromagnetic energy to electrical signals or to heat. Applications included solar energy harvesting and heat signature detectors.

主权项

1. A solar panel, comprising:
a planar substrate; a plurality of solar cells mounted to the substrate; and a plurality of spherical section energy absorber structures mounted to the planar substrate and overlaying the solar cells, each of the plurality of solar cells disposed at the center of curvature of each of the plurality of spherical section energy absorber structures, the energy absorber structures comprising a material having a spatial variation of permittivity selected such that the change of the permittivity with a radial distance from the center of curvature of each of the plurality of spherical section structures is inversely proportional to at least the square of the radius of curvature of each of the plurality of spherical section energy absorber structures.