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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Patent
Method for continuous fabrication of carbon nanotube networks or membrane materials
TL;DR: In this article, a method for the continuous production of a network of nanotubes or other nanoscale fibers is described, which includes making a suspension of nanoscal fibers dispersed in a liquid medium, optionally with surfactant and/or sonication, and filtering the suspension by moving a filter membrane through the suspension, such that the nanoscales fibers are deposited directly on the filter membrane as the fluid medium flows through the filter membranes, thereby forming a continuous membrane of the nanosale fibers.
Journal ArticleDOI
Binding energy of parallel carbon nanotubes
TL;DR: In this paper, the interaction between two separate carbon nanotubes that bond together by examing their geometry in transmission electron microscopy (TEM) was studied, and an estimate of 0.36 nN binding energy was provided.
Journal ArticleDOI
Determination of the elastic constants of gold nanorods produced by seed mediated growth
TL;DR: In this paper, the extensional and breathing modes of gold nanorods in aqueous solution have been examined by time-resolved spectroscopy, yielding values for the elastic constants for the rods.
Journal ArticleDOI
Carbon nanotubes and nanofibre: An overview
TL;DR: A concise review of structure, property, production and application of carbon nanotubes and nanofibres have been discussed in this article, where a comparison between the conventional carbon fiber and the carbon nanoblast is presented.
Journal ArticleDOI
Carbon nanotube tipped atomic force microscopy for measurement of <100 nm etch morphology on semiconductors
G. Nagy,Miguel Levy,Robert Scarmozzino,Richard M. Osgood,H. Dai,Richard E. Smalley,Chris A. Michaels,George W. Flynn,G. F. McLane +8 more
TL;DR: In this paper, the use of carbon nanotubes as tips in atomic force microscopy for a systematic study of dry etching pattern transfer in GaAs is described, where GaAs samples are patterned via electron beam lithography and then etched using magnetron reactive ion or chemically assisted ion beam processing.
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.