Journal ArticleDOI
Exceptionally high Young's modulus observed for individual carbon nanotubes
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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Friction and wear properties of aligned carbon nanotubes reinforced epoxy composites under water lubricated condition
TL;DR: In this paper, the tribological properties of continuous aligned carbon nanotubes (ACNTs) and reinforced epoxy (EP) composites in water were comparatively investigated in terms of loads and velocities, and the wear rate and the friction coefficient of ACNTs/EP composites were lower than those of pure EP.
Journal ArticleDOI
Electron diffraction from carbon nanotubes
TL;DR: In this paper, the electron diffraction pattern of a carbon nanotube is used to determine the chiral indices of the carbon nano-tubes from the electron scattering pattern.
Journal ArticleDOI
The stress transfer efficiency of a single-walled carbon nanotube in epoxy matrix
Keqin Xiao,Liangchi Zhang +1 more
TL;DR: In this paper, the authors investigated the effects of tube length and diameter on the distributions of tensile stress and interfacial shear stress of a single-walled carbon nanotube in epoxy matrix.
Journal ArticleDOI
Theoretical variations in the Young's modulus of single-walled carbon nanotubes with tube radius and temperature: a molecular dynamics study
TL;DR: In this article, the intrinsic thermal vibrations of a single-walled carbon nanotube (SWNT) modelled as a clamped cantilever were investigated using molecular dynamics simulations.
Journal ArticleDOI
Effect of interphase on elastic behavior of multiwalled carbon nanotube reinforced composite
Preeti Joshi,S.H. Upadhyay +1 more
TL;DR: In this article, the elastic response of multiwalled carbon nanotube (MWCNT) reinforced composite is reported for different interphase property between matrix and MWCNT, and the results are compared with the modified rule of mixture results which incorporate the effect of interphase also.
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.