title: Taming the blackbody with infrared metamaterials as selective thermal emitters.
abstract: In this Letter we demonstrate, for the first time, selective thermal emitters based on metamaterial perfect absorbers. We experimentally realize a narrow band midinfrared (MIR) thermal emitter. Multiple metamaterial sublattices further permit construction of a dual-band MIR emitter. By performing both emissivity and absorptivity measurements, we find that emissivity and absorptivity agree very well as predicted by Kirchhoff's law of thermal radiation. Our results directly demonstrate the great flexibility of metamaterials for tailoring blackbody emission.
authors.affiliation: Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts 02467, USA.
authors.forename: Xianliang
authors.initials: X
authors.lastname: Liu
authors.forename: Talmage
authors.initials: T
authors.lastname: Tyler
authors.forename: Tatiana
authors.initials: T
authors.lastname: Starr
authors.forename: Anthony F
authors.initials: AF
authors.lastname: Starr
authors.forename: Nan Marie
authors.initials: NM
authors.lastname: Jokerst
authors.forename: Willie J
authors.initials: WJ
authors.lastname: Padilla