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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A Comprehensive Review on CNTs and CNT-Reinforced Composites: Syntheses, Characteristics and Applications
TL;DR: In this paper, a review of the characterization techniques, synthesis approaches and properties of carbon nanotubes (CNTs), reported by earlier researchers in the past, is presented.
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Non-carbon nanotubes: synthesis and simulation
TL;DR: The discovery of a new allotropic form of carbon, extended nanometre-sized quasi-unidimensional tubular structures (carbon nanotubes), as well as broad prospects for the use of nanomaterials based on them initiated numerous studies in the search for, and design of, nanotubular structures based in other compounds.
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Applications of nanoscale carbon-based materials in heavy metal sensing and detection
TL;DR: Applications of nanoscale carbon-based materials in heavy metal sensing and detection are reviewed, highlighting the unique properties of these materials that enable their applications in the sorption and preconcentration of heavy metals ions prior to detection by spectroscopic, chromatographic and electrochemical techniques.
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The Effect of Structural Distortions on the Electronic Structure of Carbon Nanotubes
TL;DR: In this article, the effects of structural distortions on the electronic structure of carbon nanotubes were calculated and it was shown that bending a nanotube leads to an enhanced density of states in the valence band near the Fermi energy region.
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Wear resistant properties of multi-walled carbon nanotubes reinforced Al2O3 nanocomposites
TL;DR: In this article, well-dispersed multi-walled carbon nanotubes (MWCNTs) were used to reinforce an Al2O3 via a hot-press consolidation.
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.