title: Metamaterials with custom emissivity polarization in the near-infrared.
abstract: Metamaterials have been previously studied for their ability to tailor the dispersive infrared (IR) emissivity of a surface. Here, we investigate metamaterial coatings based on an electromagnetic band-gap surface for use as near-IR emitters with custom polarization selectivity. A genetic algorithm is successfully employed to optimize the metamaterial structures to exhibit custom linear, circular, and elliptical polarization. A study is also conducted on a bi-anisotropic slab, showing that anisotropic chirality is required in the metamaterial structure in order to achieve circular or elliptical emissivity polarization.
authors.affiliation: Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Jeremy A
authors.initials: JA
authors.lastname: Bossard
authors.forename: Douglas H
authors.initials: DH
authors.lastname: Werner
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D007259:Infrared Rays; D008420:Manufactured Materials / Q000032:analysis*; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation