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Absorption spectra for the films synthesized in vacuum (solid line) and in an Ar pressure (dashed line) for different volume fractions of the metal NPs.
(a) Third order nonlinear susceptibility and (b) as a function of the volume fraction of metal NPs, , for the films grown in (●) vacuum and (∎) Ar. The lines are a guide for the eyes.
Morphological characteristics of the nanocomposite films studied in this work: of Cu per NPs layer; in-plane longer dimension of the NPs; aspect ratio of NPs; of NPs per layer; of atoms at the surface to total number of atoms constituting the NPs.
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