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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Measuring the thermal conductivity of individual carbon nanotubes by the Raman shift method.
TL;DR: A non-contact Raman spectra shift method is introduced, by which the thermal conductivity (kappa) of an individual single-Walled carbon nanotube and a multi-walled carbonnanotube is measured.
Journal ArticleDOI
Carbon nanotube reinforced cementitious composites: An overview
K.M. Liew,M.F. Kai,Lu-Wen Zhang +2 more
TL;DR: In this paper, the authors focus on the research advances of CNT dispersion and CNT reinforcement on the mechanical, electrical and piezoresistive properties of cementitious composites.
Journal ArticleDOI
Solid state growth mechanisms for carbon nanotubes
TL;DR: A review of the models which have been proposed to explain carbon nanotube growth in the arc-evaporation and laser-vaporization processes can be found in this article.
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A molecular mechanics approach for analyzing tensile nonlinear deformation behavior of single-walled carbon nanotubes
TL;DR: In this article, a constitutive relation for single-walled carbon nanotubes (SWCNTs) is established to describe the nonlinear stress-strain curve of SWCNT's and to predict both the elastic properties and breaking strain of CNT's during tensile deformation.
Journal ArticleDOI
Small scale effect on elastic buckling of carbon nanotubes with nonlocal continuum models
TL;DR: In this paper, a non-local elastic beam and shell model was developed and applied to investigate the small scale effect on buckling analysis of carbon nanotubes (CNTs) under compression.
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.