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(a) Absorbance spectra of Prussian Blue (PB)-based spray formulation (black line; dilution 18 times) and glass with sprayed film (red line, 10 layers). The inset shows the dependence of the absorbance values of sprayed films vs. the number of sprayed layers. (b) Pictures of nude glass disk and the glass coated with poly(vinyl alcohol) (PVA)-PB film respectively.
