Journal ArticleDOI
Exceptionally high Young's modulus observed for individual carbon nanotubes
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TLDR
In this article, the amplitude of the intrinsic thermal vibrations of isolated carbon nanotubes was measured in the transmission electron microscopy (TEM) and it was shown that they have exceptionally high Young's moduli, in the terapascal (TPa) range.Abstract:
CARBON nanotubes are predicted to have interesting mechanical properties—in particular, high stiffness and axial strength—as a result of their seamless cylindrical graphitic structure1–5. Their mechanical properties have so far eluded direct measurement, however, because of the very small dimensions of nanotubes. Here we estimate the Young's modulus of isolated nanotubes by measuring, in the transmission electron microscope, the amplitude of their intrinsic thermal vibrations. We find that carbon nanotubes have exceptionally high Young's moduli, in the terapascal (TPa) range. Their high stiffness, coupled with their low density, implies that nanotubes might be useful as nanoscale fibres in strong, lightweight composite materials.read more
Citations
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Wave propagation in double-walled carbon nanotubes on a novel analytically nonlocal Timoshenko-beam model
TL;DR: In this article, the wave propagation in double-walled carbon nanotubes (DWCNTs) is simulated with a Timoshenko beam model based on the nonlocal continuum elasticity theory, referred to as an analytically nonlocal Timoshenko-beam (ANT) model.
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Adsorption of methyl green dye onto multi-walled carbon nanotubes decorated with Ni nanoferrite
M. Bahgat,Ahmed A. Farghali,Waleed M.A. El Rouby,Mohamed H. Khedr,Mohassab Y. Mohassab-Ahmed +4 more
TL;DR: In this article, the capability of multi-walled carbon nanotubes (CNTs) and NiFe2O4-decorated multilayer CNTs toward waste water treatment relevant to organic dyes was evaluated.
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Conducting MWNT/poly(vinyl acetate) composite nanofibres by electrospinning
TL;DR: In this article, functionalized multiwalled carbon nanotubes (f-MWNTs) were used for the fabrication of conducting nanocomposite fibres, in comparison with the composite nanofibres made of unfunctionalized MWNTs (u-MTNTs).
Journal ArticleDOI
Single-wall carbon nanotubes at ceramic grain boundaries
TL;DR: In this paper, a new way of perceiving grain boundaries in ceramic/single-wall carbon nanotube (SWNT) composites is presented, based on some new evidence obtained from transmission electron microscopy (TEM) studies.
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Removal of Cu2+ ions from aqueous solutions by carbon nanotubes
TL;DR: In this paper, carbon nanotubes (CNTs) have been shown to be an effective adsorbent for Cu2+ ion removal from aqueous solution, after oxidation with nitric acid, and the adsorption capacity of the oxidized CNTs towards Cu2+) ions at a pH of 5.2 reached 27.6 mg/g.
References
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Book
Advanced Engineering Mathematics
TL;DR: This book discusses ODEs, Partial Differential Equations, Fourier Series, Integrals, and Transforms, and Numerics for ODE's and PDE's, as well as numerical analysis and potential theory, and more.
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Large-scale synthesis of carbon nanotubes
TL;DR: In this article, the authors used a variant of the standard arc-discharge technique for fullerene synthesis under a helium atmosphere, where a carbonaceous deposit formed on one of the graphite rods, consisting of a macroscopic (diameter of about 5 mm) cylinder.
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Advanced Engineering Mathematics. ByErwin Kreyszig. Pp. xx, 899. 68s. (Wiley.)
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Energetics of Nanoscale Graphitic Tubules
TL;DR: It is found that the strain energy per carbon relative to an unstrained graphite sheet goes as the inverse square of the tubule radius, R, and is insensitive to other aspects of the lattice structure, indicating that relationships derivable from continuum elastic theory persist well into the small radius limit.
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Growth, Structure, and Properties of Graphite Whiskers
TL;DR: Graphite whiskers have been grown in a dc arc under a pressure of 92 atmospheres of argon and at 3900°K as discussed by the authors, with recoverable lengths up to 3 cm. They are embedded in a solid matrix of graphite which builds up by diffusion of carbon vapor from the positive to the negative electrode.