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.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2011
- DOI:
- 10.1103/PhysRevLett.107.045901
- Bibcode:
- 2011PhRvL.107d5901L
- Keywords:
-
- 65.80.-g;
- 78.20.-e;
- 78.67.Pt;
- 79.60.Dp;
- Optical properties of bulk materials and thin films;
- Multilayers;
- superlattices;
- Adsorbed layers and thin films