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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Advances in carbon nanotube n-type doping: Methods, analysis and applications
Liam Brownlie,Joseph G. Shapter +1 more
TL;DR: In this article, the most recent and promising methods of n-type doping of carbon nanotubes (SWCNTs) are presented for their simplicity and quality of electrical properties.
Journal ArticleDOI
Coordination-Resolved C−C Bond Length and the C 1s Binding Energy of Carbon Allotropes and the Effective Atomic Coordination of the Few-Layer Graphene
TL;DR: Sun et al. as mentioned in this paper showed that the C−C bond contracts spontaneously by up to 30% at the edges of graphene ribbons with respect to the bulk-diamond value of 0.154 nm.
Journal ArticleDOI
Stress Calculations for Carbon Nanotubes
TL;DR: In this paper, the atomic stresses of carbon nanotubes under strain conditions were calculated for graphitic tubules with radii ranging from approximately 2 to 11 Angstroms and two different tubule structures with varying atomic orientations.
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Tubes on tube—a novel form of aligned carbon nanotubes
Journal ArticleDOI
Determination of the young's modulus of structurally defined carbon nanotubes.
Yang Wu,Mingyuan Huang,Feng Wang,X. M. Henry Huang,Sami Rosenblatt,Limin Huang,Hugen Yan,Stephen O'Brien,James Hone,Tony F. Heinz +9 more
TL;DR: This work has combined optical characterization with a magnetic actuation technique to measure the stiffness of single-walled carbon nanotubes of defined crystal structure and found no dependence on the nanotube chiral index.
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.