Journal ArticleDOI
Exceptionally high Young's modulus observed for individual carbon nanotubes
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Electrochemical double layer capacitor electrodes using aligned carbon nanotubes grown directly on metals
TL;DR: The fabricated EDLCs showed very small equivalent series resistances, indicating that the integrated CNT electrodes fabricated using a simple single step process hold significant promise in applications related to electrochemical energy storage.
Book ChapterDOI
Multi-Walled Carbon Nanotubes
TL;DR: Multi-walled carbon nanotubes (MWCNTs) as discussed by the authors are elongated cylindrical nanoobjects made of sp2 carbon and can grow several cm long, thus their aspect ratio can vary between 10 and ten million.
Journal ArticleDOI
Effects of initial stress on non-coaxial resonance of multi-wall carbon nanotubes
TL;DR: In this paper, the influence of initial stress on the flexural vibration of an individual multi-wall carbon nanotube with simply supported ends was investigated based on a laminated elastic beam model considering the van der Waals force interaction between two adjacent nanotubes.
Journal ArticleDOI
First-principles calculations for nitrogen-containing single-walled carbon nanotubes
TL;DR: In this paper, the authors present calculations for possible configurations of nitrogen-containing single-walled carbon nanotubes and their electronic properties obtained with the ab initio tight-binding FIREBALL method.
Journal ArticleDOI
Platinum catalysts supported on MWNT for catalytic wet air oxidation of nitrogen containing compounds
Juan García,Juan García,Helder Gomes,Philippe Serp,Philippe Kalck,José L. Figueiredo,Joaquim L. Faria +6 more
TL;DR: In this paper, multi-walled carbon nanotubes (MWNT) activated by nitric acid oxidation were used to prepare supported platinum (1% Pt) catalysts by the excess solution impregnation method.
References
More filters
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.