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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Indentation across size scales and disciplines: Recent developments in experimentation and modeling
TL;DR: Indentation is a remarkably flexible mechanical test due to its relative experimental simplicity as discussed by the authors, and the ease of implementation has made indentation a ubiquitous research tool for a number of different systems across size scales (nano to macro) and scientific/engineering disciplines.
Journal ArticleDOI
Ultrastrong, Stiff, and Lightweight Carbon‐Nanotube Fibers
Xiefei Zhang,Qingwen Li,Terry G. Holesinger,Paul N. Arendt,Jian Yu Huang,P. D. Kirven,Timothy G. Clapp,Raymond F. DePaula,Xiaozhou Liao,Yonghao Zhao,Lianxi Zheng,Dean E. Peterson,Yuntian Zhu +12 more
TL;DR: In this article, the authors report CNT fibers that are many times stronger and stiffer per weight than the best existing engineering fibers and over twenty times better than other reported CNT fibres.
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Some basic aspects of polymer nanocomposites: A critical review
TL;DR: In this paper, the three basic aspects of processing, characterization and properties of polymer nanocomposites are critically reviewed in a review, and the effects of nanofiller type, dispersion and contents are discussed in some details.
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Contact-damage-resistant ceramic/single-wall carbon nanotubes and ceramic/graphite composites
TL;DR: It is argued that the highly shear-deformable SWNTs or graphite heterogeneities in the Composites help redistribute the stress field under indentation, imparting the composites with contact-damage resistance.
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Metal-Nanocluster-Filled Carbon Nanotubes: Catalytic Properties and Possible Applications in Electrochemical Energy Storage and Production
TL;DR: In this paper, a template-synthesized carbon tubule is used to construct a monodisperse graphitic carbon nanotubule membrane, which can then be filled with nanoparticles of electrocatalytic materials (i.e., Pt, Ru, Pt/Ru).
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.