Metasurface of aluminum nanocylinders to enhance the chemiluminescence of luminol

As a result of numerical modeling, the parameters of a square lattice of aluminum nanocylinders were found, which ensures the maximum enhancement of luminol chemiluminescence at a wavelength of 430 nm. The period of the lattice formed by aluminum nanocylinders and the radius of the nanocylinders were varied at a constant height of 20 nm. The enhancement factor was averaged over a layer of an aqueous solution of the analyte and luminol covering the nanocylinders. While the maximum enhancement factor for chemiluminophore molecules located near the surface of nanocylinders exceeds a thousand, the enhancement value averaged over the reaction mixture layer under optimal conditions was 3.2.