Overall layers of the metamaterial absorber are shown. The black layer is the substrate, solid green layer is palladium, transparent blue layer is polyimide, broken green layer is the patterned layer and the transparent blue layer is again polyimide to seal and protect. (Bossard, Penn State)
(l) This is a drawing of the metamaterial absorber pattern. (r) This is an actual metamaterial absorber pattern. (Bossard, Penn State)
This is an overall pattern of the metamaterial absorber. (Bossard, Penn State)
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A specially formed material that can provide custom broadband absorption in the infrared can be identified and manufactured using "genetic algorithms," according to Penn State engineers, who say these metamaterials can shield objects from view by infrared sensors, protect instruments and be manufactured to cover a variety of wavelengths...