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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Journal ArticleDOI
Nanocrystalline materials and coatings
Sie Chin Tjong,Haydn Chen +1 more
TL;DR: In this paper, a review of the current developments in fabrication, microstructure, physical and mechanical properties of nanocrystalline materials and coatings is addressed. And the properties of transition metal nitride nanocrystine films formed by ion beam assisted deposition process.
Book ChapterDOI
Mechanical Properties of Carbon Nanotubes
TL;DR: An overview of the mechanical properties of carbon nanotubes, starting from the linear elastic parameters, nonlinear elastic instabilities and buckling, and the inelastic relaxation, yield strength and fracture mechanisms is presented in this paper.
Journal ArticleDOI
Roles of minor additions in formation and properties of bulk metallic glasses
TL;DR: In this paper, a comprehensive review of the history and the recent developments of this technique in the field of bulk metallic glasses (BMGs) is presented and summarized within the framework of thermodynamics, kinetics and microstructure.
Journal ArticleDOI
Controlled production of aligned-nanotube bundles
Mauricio Terrones,Nicole Grobert,José Olivares,J. P. Zhang,Humberto Terrones,K. Kordatos,Wen-Kuang Hsu,J. P. Hare,P.D. Townsend,Kosmas Prassides,Anthony K. Cheetham,Harold W. Kroto,David R. M. Walton +12 more
TL;DR: In this paper, a method for generating aligned carbon nanotubes by pyrolysis of 2-amino-4,6-dichloro-s-triazine over thin films of a cobalt catalyst patterned on a silica substrate by laser etching is described.
Journal ArticleDOI
Strengthening in carbon nanotube/aluminium (CNT/Al) composites
TL;DR: In this article, three major mechanisms involved in CNT/Al composites are analyzed along with experimental procedure for making CNT and Al composites, along with three major composites strengthening mechanisms.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Advanced Engineering Mathematics. ByErwin Kreyszig. Pp. xx, 899. 68s. (Wiley.)
Journal ArticleDOI
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.