Figure 4

Absorbance intensity of hybrid multi-layered nanoporous arrayed films deposited on six AAO templates with different geometries. (I) S = 110 nm, D = 40 nm; (II) S = 110 nm, D = 60 nm; (III) S = 110 nm, D = 100 nm; (IV) S = 450 nm, D = 130 nm; (V) S = 450 nm, D = 160 nm and (VI) S = 450 nm, D = 200 nm. (a) Full range spectra. (b) Magnified local spectra with the vertical black line marks excitation at 660 nm.