Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3600779
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Funding
- AFOSR [FA9550-10-1-0226]
- National Science Foundation [0925542]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0925542] Funding Source: National Science Foundation
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We demonstrate thin-film metamaterials with resonances in the midinfrared (mid-IR) wavelength range. Our structures are numerically modeled and experimentally characterized by reflection and angularly resolved thermal emission spectroscopy. We demonstrate strong and controllable absorption resonances across the mid-IR wavelength range. In addition, the polarized thermal emission from these samples is shown to be highly selective and largely independent of emission angles from normal to 45 degrees. Experimental results are compared to numerical models with excellent agreement. Such structures hold promise for large-area, low-cost metamaterial coatings for control of gray- or black-body thermal signatures, as well as for possible mid-IR sensing applications. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600779]
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