Abstract
Analyzing diamond nanocrystal (DNC) thin film morphology produced by the HFCVD technique is the main objective of the present work. Stereometric analysis of three-dimensional surface microtextures was carried out based on data obtained through atomic force microscopy (AFM), while the ISO 25178-2:2012 standard was applied to characterize surface topography. The Abbott–Firestone curve, peak count histograms, and Cartesian graphs, which were extracted through AFM images, gave valuable statistical information. As can be seen, the most isotropic sample was the Au catalyst (etched) deposited by the hot filament chemical vapor deposition method. Moreover, by increasing the time of DNC growth from 15 min to 60 min, the surface roughness was increased. In addition, the average power spectral density was calculated and furrows were determined for all samples.
Highlights
Scitation.org/journal/adv In Fig. 2, the x-ray diffraction (XRD) patterns of the diamond nanocrystal (DNC) films are illustrated for samples grown for 15 min, 30 min, and 60 min
We mainly focused on the synthesis of DNC thin films on a Si substrate in the present approach and used atomic force microscopy (AFM) and multifractal analysis to investigate their morphological features
The 3D surface microtexture characteristics of DNC thin films were quantitatively investigated by the Abbott–Firestone curve and fractal geometry along with other stereometric analyses such as furrows and average power spectral density (PSD)
Summary
The unique properties of nano-materials make them suitable candidates to be applied in various types of technologies in the field of science, biology, and engineering. Among these types of materials, diamond nanocrystal (DNCs) thin films, because of their significant properties, motivated scientists to use them in industrial sectors over the last few decades. Diamonds, because of their high surface to volume ratio and significant properties like high breakdown field strength, high electron and hole motilities, and large bandgap (5.5 eV), attract as much research interest as other carbon allotropes, i.e., graphite and carbon nanotubes. It is the hardest material that has ever been known with the maximum value of wear resistance.In the process of producing DNCs, several methods such as the electrochemical method, conformal coatings for micro-electromechanical systems (MEMSs), and the chemical vapor deposition (CVD) method have been introduced. Between them, the chemical vapor deposition (CVD) method is considered the best method for the growth of diamond films. The unique properties of nano-materials make them suitable candidates to be applied in various types of technologies in the field of science, biology, and engineering.. The unique properties of nano-materials make them suitable candidates to be applied in various types of technologies in the field of science, biology, and engineering.1–5 Among these types of materials, diamond nanocrystal (DNCs) thin films, because of their significant properties, motivated scientists to use them in industrial sectors over the last few decades.. Among these types of materials, diamond nanocrystal (DNCs) thin films, because of their significant properties, motivated scientists to use them in industrial sectors over the last few decades.5–7 Diamonds, because of their high surface to volume ratio and significant properties like high breakdown field strength, high electron and hole motilities, and large bandgap (5.5 eV), attract as much research interest as other carbon allotropes, i.e., graphite and carbon nanotubes.. Hot filament CVD (HFCVD) has been used here for the growth of DNC films due to its high efficiency and low cost.
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