https://www.selleckchem.com/pr....oducts/peficitinb-as
We experimentally study the optical properties of Al-SiO2 hyperbolic metamaterials. The hyperbolic dispersion and ultrathin Al film ∼12nm make the Al-SiO2 multilayers possess transmission efficiency ∼0.3 for the spatial frequency ranging from k0 to 1.42 k0 at 363.8 nm illumination. The atomic concentration of 3% Cu-doping is experimentally demonstrated to obtain Al film ∼12nm with root-mean-square roughness ∼0.49nm. The fabricated Al-SiO2 multilayers combined with the optimized ZrO2 resonant grating with period 2
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