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A graphite grid was fabricated using reactive ion etching with a stencil mask. The graphite film was synthesized through chemical vapor deposition on commercial Ni foil and was simply etched with a stencil mask using oxygen plasma during reactive ion etching. It had ∼85% optical transmittance at a 550-nm wavelength and ∼120 Ω/sq sheet resistance. Graphite grids placed on a human hand used to distinguish...
Nickel is one of the most commonly used catalysts for the growth of carbon nanofibers (CNFs) by catalytic chemical vapor deposition (CVD). Nevertheless, the chemical state of nickel catalyst, which may be metallic nickel (Ni), nickel subcarbide (Ni3C1-x) and nickel carbide (Ni3C) during the growth process of CNFs, remains a longstanding issue. We report here the catalytic growth of CNFs by CVD at...
Carbon nanostructured materials such as carbon nanotubes and graphene oxide are attracting much attention due to their outstanding chemical and physical properties. Metal nanoparticle-decoration can provide additional functionalities to these nanocarbons. Many chemical methods are being used for the synthesis of these metal nanoparticle-functionalized nanocarbon hybrids. On the other hand, the outstanding...
Here, we report the hydrothermal synthesis of boron-doped CNPs (B-CNPs) with different size/atomic percentage of doping and size-independent color tunability from red to blue. The variation of size/atomic percentage of B is achieved by simply varying the reaction time, while the color tunability is obtained by diluting the solution. With dilution, the luminescence spectra are not only blue-shifted,...
Graphyne is a planar two-dimensional carbon allotrope formed by atoms in sp, sp2, and sp3 hybridized states. Topologically graphyne nanotubes (GNTs) can be considered as cylindrically rolled up graphyne sheets, similarly as carbon nanotubes (CNTs) can be considered rolled up graphene sheets. Due to the presence of single, double, and triple bonds, GNTs exhibit porous sidewalls that can be exploited...
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