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
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Electrical, mechanical, and glass transition behavior of polycarbonate-based nanocomposites with different multi-walled carbon nanotubes
Frank Yepez Castillo,Robert Socher,Beate Krause,Robert J. Headrick,Brian P. Grady,Ricardo Prada-Silvy,Petra Pötschke +6 more
TL;DR: In this article, five commercially available multi-walled carbon nanotubes (MWNTs), with different characteristics, were melt mixed with polycarbonate (PC) in a twin-screw micro compounder to obtain nanocomposites containing 0.25-3.0% MWNT.
Journal ArticleDOI
Rapid and low temperature spark plasma sintering synthesis of novel carbon nanotube reinforced titanium matrix composites
Fuchi Wang,Zhao-Hui Zhang,Yong-Jun Sun,Ying Liu,Zheng-Yang Hu,Hu Wang,Alexander V. Korznikov,Elena A. Korznikova,Zhen-Feng Liu,S. Osamu +9 more
TL;DR: In this article, multi-walled carbon nanotube (MWCNT) reinforced titanium matrix composites were synthesized using a spark plasma sintering method at a low sinting temperature of 550 degrees C. The effects of the weight fraction of MWCNTs on the microstructures and the mechanical and thermal properties of the composites are investigated.
Journal ArticleDOI
Dispersion and thermal conductivity of carbon nanotube composites
TL;DR: In this paper, single walled carbon nanotubes (SWCNTs) were mechanically cut to produce short and open-ended fullerene pipes, which were then used in polymer composites.
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Multi-walled carbon nanotubes reinforced Al2O3 nanocomposites: Mechanical properties and interfacial investigations
TL;DR: In this paper, a well-dispersed multi-walled carbon nanotubes (CNTs) reinforced Al2O3 nanocomposites were successfully fabricated by hot-pressing.
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Rheological and electrical properties of polycarbonate/multi-walled carbon nanotube composites
TL;DR: In this paper, the electrical properties of polycarbonate (PC)/multi-walled carbon nanotube (MWNT) composites were studied and it was suggested that the electrical and rheological properties of the PC/MWNT composites are affected by the MWNT-MWNT network structure.
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.