Journal ArticleDOI
Exceptionally high Young's modulus observed for individual carbon nanotubes
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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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Medicinal Chemistry and Pharmacological Potential of Fullerenes and Carbon Nanotubes
Franco Cataldo,Tatiana Da Ros +1 more
TL;DR: In this article, a new approach to QSPR Modeling of Fullerene C60 Solubility in Organic Solvents: An Application of SMILES-Based Optimal Descriptors is presented.
Journal ArticleDOI
Application of derivatized magnetic materials to the separation and the preconcentration of pollutants in water samples
Ligang Chen,Ting Wang,Jia Tong +2 more
TL;DR: The magnetic extraction method is not only convenient, economical and highly efficient, but it also overcomes problems with conventional solid-phase extraction, (e.g., packing of sorbent into the column and time-consuming loading of large-volume samples).
Journal ArticleDOI
The 500 MHz to 5.50 GHz complex permittivity spectra of single-wall carbon nanotube-loaded polymer composites
TL;DR: In this paper, Lagarkov et al. measured the complex permittivity spectra of a thin-film polymer with single-wall carbon nanotubes at 500 MHz and 5.50 GHz.
Journal ArticleDOI
The influence of matrix viscosity on MWCNT dispersion and electrical properties in different thermoplastic nanocomposites
TL;DR: In this paper, composites of MWCNTs having each three different levels of matrix viscosity with five different polymers (polyamide 12, polybutylene terephthalate, polycarbonate,polyetheretherketone and low density polyethylene) were melt mixed.
Journal ArticleDOI
Determination of mechanical properties of carbon nanotubes and vertically aligned carbon nanotube forests using nanoindentation
H.J. Qi,Kenneth B. K. Teo,Kenneth K. S. Lau,Mary C. Boyce,William I. Milne,John Robertson,Karen K. Gleason +6 more
TL;DR: In this paper, a method to determine the mechanical properties of VACNT and constituent carbon nanotubes using nanoindentation tests is proposed, which reveals a process whereby the nanotsubes are consecutively bent during the penetration of the indentor.
References
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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.
Journal ArticleDOI
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.