Stereometric and fractal analysis of granulated silver films used in thin‐film hybrid structures

Abstract

Silver nanostructures are of interest to be used in hybrid thin-film structures with various materials. In this work, we analyse 3D AFM images of granulated silver film nanostructures prepared by thermal evaporation. The advanced AFM data study aims to understand how film thickness and postannealing affect the nanostructure morphology changes. For the first time, the evaluation of surface statistical parameters and fractal geometry were used to characterise the nanostructure morphology of Ag island films. The samples with gravimetric thickness of 2, 4 and 10 nm were analysed before and after annealing at 200°C for 10 min. The statistical processing revealed the essential variation of parameters with Ag film thickness increment and as a postannealing result. The nonmonotonic variation of surface roughness, skewness and fractal dimensions were found. It is caused by the features of the film growth process with the thickness increment and thermally activated diffusion of Ag nanoparticles during annealing.

Characterization and application of LDH with chitosan composites investigated by positron annihilation lifetime spectroscopy and surface texture for the adsorption of methyl orange

“…This supports the idea that the surface textures of the two samples are isotropic, as indicated by the aspect ratio of the texture (Str) values of 0.8238 and 0.8882 for LDH/CS1 and LDH/CS2, respectively. If Str is near the unit, the surface is isotropic; if Str is near 0 on the other hand, the surface is anisotropic 51 . The kurtosis and skewness features are computed using the square root of the surface height distribution (RMS).…”

“…Because chitosan is present on the LDH surface, LDH/CS1 has a spiky surface, whereas LDH/CS2 has an agglomerated surface that results in a bumpy surface. Roughness skewness (Rsk) is a measure of surface symmetry; a positive number denotes a “peaky” surface, while a negative value indicates that troughs peaky surface 51 . LDH/CS1 has a positive Rsk, which indicates that its surface is peaky.…”

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

“…Three preferred angles exist, as depicted in Fig. 5, which might be connected to the surface's inhomogeneity 66 . When the aspect ratio of the texture Str is almost 0, the surface is anisotropic; when Str is nearly 1, the surface is isotropic 68 .…”

Enhanced Optical and Electrical Interactions at the Pt/MgSe Interfaces Designed for 6G Communication Technology

“…The thermal evaporation technology is favored over other techniques because it is a simpler and more affordable technique than applying an electron beam or a focused ion beam. [ 9 ] By altering the evaporation conditions like substrate temperatures, evaporation rates and films thicknesses various modifications to the formed nanostructure can be achieved. As for examples, varying morphology of metal islands films allows justification of the characteristics of localized surface plasmon resonance in the films.…”

“…The latter is important for thin‐film hybrid structures with semiconductor and dielectric materials. [ 9 ]…”