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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High performance polymer actuator based on carbon nanotube-ionic liquid gel: Effect of ionic liquid
TL;DR: In this article, a dependence of anionic species of ionic liquids (ILs) (IL: perfluoroalkyltrifluoroborate anions) on electrochemical and electromechanical properties was investigated.
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Thermal resistance and phonon scattering at the interface between carbon nanotube and amorphous polyethylene
TL;DR: In this paper, a molecular dynamics study of heat conduction in carbon nanotube (CNT)/polyethylene (PE) composites was conducted, where the authors focused on two key interfacial effects: the thermal boundary resistance across the CNT/PE interface, and the reduction of CNT thermal conductivity due to boundary phonon scattering at the interface with amorphous PE matrix.
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Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion
TL;DR: In this article, a novel process for preparing carbon nanotubes (CNTs) reinforced magnesium nanocomposites was developed, which combined friction stir processing (FSP) and ultrasonic assisted extrusion.
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Cavity-enhanced optical detection of carbon nanotube Brownian motion
TL;DR: In this article, a fiber-based, high-finesse optical microcavity was employed to detect the Brownian motion of a freely suspended carbon nanotube at room temperature under vacuum.
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The Effect of Stress Transfer Within Double‐Walled Carbon Nanotubes Upon Their Ability to Reinforce Composites
TL;DR: In this paper, the effect of stress transfer within double-walled carbon nanotubes (DWNT) upon their ability to reinforce composites has been reported, and it has been found that the stress transfer from the outer to the inner walls in DWNT in composites is poor, such that inner walls are virtually unstressed during both tensile and compressive deformation.
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.