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
Thermal expansion of a composite of single-walled carbon nanotubes and nanocrystalline aluminum
TL;DR: In this paper, the authors investigated the thermal properties of carbon nanotubes (CNTs) reinforced composites and found that the CTE of Al is higher compared to those of semiconductor materials.
Journal ArticleDOI
Carbon Fiber–Bismaleimide Composites Filled with Nickel-Coated Single-Walled Carbon Nanotubes for Lightning-Strike Protection
Divya Kannan Chakravarthi,Valery N. Khabashesku,Ranji Vaidyanathan,Jeanette Blaine,Shridhar Yarlagadda,David Roseman,Qiang Zeng,Enrique V. Barrera +7 more
TL;DR: In this paper, the authors present a study on processing, materials optimization, and property development of high-temperature bismaleimide (BMI)-carbon fiber composites filled with nickel-coated single-walled carbon nanotubes (Ni-SWNTs).
Journal ArticleDOI
Free vibration of multiwall carbon nanotubes
TL;DR: In this paper, the effect of interlayer van der Waals (vdW) interaction on free vibration of multilayer carbon nanotubes (MWNTs) was studied. But the authors focused on the effect on radial (R) modes of large-radius MWNTs and not on torsional (T) and longitudinal (L) modes.
Journal ArticleDOI
Growth and field electron emission of vertically aligned multiwalled carbon nanotubes
TL;DR: In this article, the authors used C2H2 to grow uniformly well-aligned carbon nanotubes (CNTs) with beak-like tips without any encapsulated Ni particles inside and exhibit high field emission current density, e.g. 2.9 mA/cm2 at 3.7 V/μm.
Journal ArticleDOI
Multi-Functional Carbon Fibre Composites using Carbon Nanotubes as an Alternative to Polymer Sizing.
Thomas Pozegic,J.V. Anguita,Ian Hamerton,K.D.G.I. Jayawardena,Jeng-Shiung Chen,Vlad Stolojan,P. Ballocchi,R. Walsh,S. R. P. Silva +8 more
TL;DR: Improvements in carbon nanotubes on the carbon fibres suggest the potential of a direct replacement for lightning strike solutions and to enhance the efficiency of current de-icing solutions employed in the aerospace industry.
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.