Abstract
The objective of this study is the experimental investigation of the silver in diamond-like carbon (Ag/DLC) nanocomposite prepared by the co-deposition of radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD) and RF-sputtering. Atomic force microscopy (AFM), X-ray diffraction analyses, ultraviolet–visible (UV–visible) spectroscopy measurements were applied to describe the three-dimensional surface texture data in connection with the statistical, and multifractal analyses. Additional information about structure–property relationships in prepared Ag/DLC nanocomposite was studied in detail to allow a better understanding of the surface micromorphology. The performed analysis revealed the studied samples have multifractal properties and can be included in novel algorithms for graphical representation of complex geometrical shapes and implemented in computer simulation algorithms.
Highlights
Abbreviations Ag/DLC Silver in diamond like carbon RF-PECVD Radiofrequency plasma-enhanced chemical vapor deposition AFM Atomic force microscopy XRD X-ray diffraction UV–visible Ultraviolet–visible localized surface plasmon resonance (LSPR) Localized surface plasmon resonance 3D Three dimensional NPs Nanoparticles FTIR Fourier transform infrared root mean square (RMS) Root mean square ACF The autocorrelation function HHCF The height–height correlation function PSDF The power spectral density function
It is observed that in the absorption spectrum for all three samples the peak appears. This peak is related to localized surface plasmon resonance (LSPR) of Ag nanoparticles, which confirms the presence of Ag nanoparticles in prepared samples
The surface microtexture characteristics of Ag/DLC nanocomposite prepared by RF-PECVD and RF-sputtering co-deposition method was quantitatively investigated using AFM together with the 3-D surface micromorphology and multifractal analyzes
Summary
Abbreviations Ag/DLC Silver in diamond like carbon RF-PECVD Radiofrequency plasma-enhanced chemical vapor deposition AFM Atomic force microscopy XRD X-ray diffraction UV–visible Ultraviolet–visible LSPR Localized surface plasmon resonance 3D Three dimensional NPs Nanoparticles FTIR Fourier transform infrared RMS Root mean square ACF The autocorrelation function HHCF The height–height correlation function PSDF The power spectral density function. Considerable progress has been made in the development of theoretical and computational methods to characterize the silver in diamond-like carbon (Ag/DLC) nanocomposite microstructures at the nanoscale in both the academic world and industry, because these films offer a wide range of exceptional physical, mechanical, and tribological properties. Manninen et al.[1] studied the Ag–DLC coatings deposited by magnetron sputtering to evaluate: the Ag nanoparticle size distribution along the coatings thickness and the silver stability in DLC coatings. Goto[2] reported results concerning the characteristics and tribological properties of both Ag/DLC nanocomposite coatings and Cu/DLC nanocomposite coatings with hydrogen-free DLC matrix deposited by RF magnetron sputtering using a concentric composite target. Wu et al.[3] studied the doping effects of Ag concentration on microstructure, mechanical and vacuum tribological properties of the DLC films
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