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
Radial deformation and stability of single-wall carbon nanotubes under hydrostatic pressure
TL;DR: In this article, the authors developed a theory of energetics for isolated single-wall carbon nanotubes (SWNTs) deformed in the radial direction and applied this theory to investigate their deformation characteristics and stability under hydrostatic pressure.
Journal ArticleDOI
Non-intrusive health monitoring of infused composites with embedded carbon quantum piezo-resistive sensors
S. Nag-Chowdhury,S. Nag-Chowdhury,H. Bellegou,Isabelle Pillin,Mickaël Castro,Pascal Longrais,Jean-François Feller +6 more
TL;DR: In this paper, a new generation of nanocomposite quantum resistive sensors (QRS) is introduced to sense the health of fiber reinforced polymer composites (FRP) without sacrificing their integrity.
Journal ArticleDOI
Raman spectroscopy of strained single-walled carbon nanotubes
Zhongfan Liu,Jin Zhang,Bo Gao +2 more
TL;DR: It is found that depending on different structural variations, Raman spectra of SWNTs have different responses to each strain, showing that resonant-Raman spectroscopy is a suitable tool to characterize and study strains inSWNTs.
Journal ArticleDOI
Possible tactics to improve the growth of single-walled carbon nanotubes by chemical vapor deposition
TL;DR: In this article, the authors investigated the effects of MgO-supported catalysts on the chemical vapor deposition (CVD) growth of single-walled nanotubes (SWNTs).
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.