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
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Flow-thermoelastic vibration and instability analysis of viscoelastic carbon nanotubes embedded in viscous fluid
TL;DR: In this article, the flexural vibration of viscoelastic carbon nanotubes (CNTs) conveying fluid and embedded in viscous fluid is investigated by the nonlocal Timoshenko beam model.
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Indentation Analysis of Linear-Chain Hydrocarbon Monolayers Anchored to Diamond
TL;DR: In this article, a flexible and rigid single-wall, capped [10,10] nanotube was used as the tip for indentation of linear hydrocarbon chains with 8, 13 or 22 carbon atoms.
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Synthesis, microstructure and electrical conductivity of carbon nanotube–alumina nanocomposites
TL;DR: In this article, a carbon nanotube-alumina (CNT-Al 2 O 3 ) nanocomposites have been synthesized by direct growth of carbon-nanotubes on alumina by chemical vapor deposition (CVD) and the as-grown nano-composites were densified by spark plasma sintering (SPS).
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Reinforcement of calcium phosphate cement by bio-mineralized carbon nanotube
TL;DR: In this article, bio-mineralized carbon natotubes (CNTs) were prepared by soaking carboxyl functionalized CNTs in a simulating body fluid (SBF).
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Preparation and properties of ethylene propylene diene rubber/multi walled carbon nanotube composites for strain sensitive materials
TL;DR: In this article, the composites were prepared with a constant amount of organo-clay and various amounts of multi walled carbon nanotubes (MWCNTs) from 5 to 50 ¼%.
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.