2020
DOI: 10.1155/2020/8814459
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On the Structural, Morphological, and Electrical Properties of Carbon Nanowalls Obtained by Plasma-Enhanced Chemical Vapor Deposition

Abstract: In this study, we investigated the morphological, structural, and electrical properties of carbon nanowall (CNW) structures obtained by plasma-enhanced chemical vapour deposition (PECVD) and underlined the induced effects of argon/nitrogen (Ar/N2) postsynthesis plasma treatment on the electrical behaviour. The top view and cross-section scanning electron microscopy micrographs revealed that the fabricated samples are about 18 μm height, and the edges are less than 10 nm. The Raman analysis showed the presence … Show more

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Cited by 6 publications
(5 citation statements)
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“…The vertical form of the individual nanowalls and their height (~6 μm) can be observed in Figure 3a. This patterning was induced by the high values of working temperature and the local electrical field created by the applied power (700 °C and 300 W) which forced the carbon sheets to curl up on vertical walls [34,35]. The structure of the graphene porous network exposes an assortment of tubular open spaces which extend vertically, across the layer, from bottom to top (Figure 3a,b).…”
Section: Morphological Propertiesmentioning
confidence: 99%
“…The vertical form of the individual nanowalls and their height (~6 μm) can be observed in Figure 3a. This patterning was induced by the high values of working temperature and the local electrical field created by the applied power (700 °C and 300 W) which forced the carbon sheets to curl up on vertical walls [34,35]. The structure of the graphene porous network exposes an assortment of tubular open spaces which extend vertically, across the layer, from bottom to top (Figure 3a,b).…”
Section: Morphological Propertiesmentioning
confidence: 99%
“…A sample coated with carbon nanowalls was prepared on K455 steel (OL) by plasma deposition in experimental conditions optimized in previous studies [36][37][38]. SEM images corresponding to this sample are presented in Figure 3a-c, at different magnifications, and the sample was named OL/CNW.…”
Section: Cnw Deposition On K455 Steelmentioning
confidence: 99%
“…In addition, copper composite coatings with other carbon structures-graphene or reduced graphene oxide, showed improved mechanical properties (wear resistance, Vickers hardness), and thermal conductivity [28]. Carbon fibers reinforced in a copper metal matrix also offers excellent characteristics, namely good self-lubrication, low thermal expansion, low thermal conductivity, good wear resistance and high mechanical strength [35] Other carbon nanostructures, carbon nanowalls (CNW), were also obtained and presented in our recent publications for electronics (micro-supercapacitors) [36] or bio applications (to mediate biological cells interaction with oxidized silicon substrate) [37,38]. These can be described as networks of interconnected carbon walls with a few to tens of nanometers thickness, grown vertically on a substrate [39].…”
Section: Introductionmentioning
confidence: 98%
“…Among nanomaterials, carbon nanowalls (CNWs) are of particular interest for research due to the large specific surface area, mechanical strength, attractive electrical, optical and other properties. [19][20][21][22][23] Most scientists suggest using CNWs for practical applications, in particular for the creation of solar cells, [24][25][26][27] light-emitting diodes, 28,29) sensors, 30,31) superhydrophobic coatings, 32,33) supercapacitors, [34][35][36] storage devices, [37][38][39] black body coating, 40) photo-electrochemical water splitting 41) and etc.…”
Section: Introductionmentioning
confidence: 99%
“…CNWs are three-dimensional networks with open edges with vertically oriented linked graphene nanosheets, which are freely positioned perpendicular to the substrates and form a labyrinthine surface. [19][20][21] The morphology of such nanostructure as CNWs is unique and the study of its properties for further practical applications is a very urgent task. The morphology is assessed using various analytical devices, in particular, scanning electron microscopy and scanning probe microscopy, 23,42) however the analysis of the obtained results requires additional tools, in particular special software and methods.…”
Section: Introductionmentioning
confidence: 99%