Abstract
The fabrication of black-gold coatings using sputtering is reported here. Glancing angle deposition with a rotating substrate is needed to obtain vertical nanostructures. Enhanced light absorption is obtained in the samples prepared in the ballistic regime with high tilt angles. Under these conditions the diameter distribution of the nanostructures is centered at about 60 nm and the standard deviation is large enough to obtain black-metal behavior in the visible range.
Highlights
Black-metal coatings are metallic coatings that exhibit a high absorption in a certain region of the electromagnetic spectra
By employing glancing angle deposition (GLAD), nanostructured coatings can be produced onto flat substrates, taking advantage of atomic shadowing effects
We report the fabrication of black-gold coatings in the visible range via GLAD sputtering by rotating the substrate during the deposition
Summary
Black-metal coatings are metallic coatings that exhibit a high absorption in a certain region of the electromagnetic spectra. We report the fabrication of black-gold coatings in the visible range via GLAD sputtering by rotating the substrate during the deposition.
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