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Very-high-strength (60-GPa) carbon nanotube fiber design based on molecular dynamics simulations
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10.1063/1.3594197
/content/aip/journal/jcp/134/20/10.1063/1.3594197
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/20/10.1063/1.3594197
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Carbon nanotube fiber (a) initial configuration with CNTs placed end-to-end over the length of the fiber; (b) interstitial carbon atoms forming cross-link bonds along the length of the fiber; (c) cross section of fiber with cross-link bonds between the strands of the fiber.

Image of FIG. 2.
FIG. 2.

Time evolution of the stress and strain for two increments of increased strain.

Image of FIG. 3.
FIG. 3.

Stress-strain curves for eight statistically equivalent fibers. A different seed is used for the random number generator to construct the fiber. All of the fibers are 4000 Å long and are constructed using CNTs with an average length of 1000 Å with a standard deviation in the tube length of 200 Å.

Image of FIG. 4.
FIG. 4.

Simulation stress-strain curve results for fiber lengths of 2000, 4000, 6000, and 8000 Å with initial cross-link concentrations of 0.125%, 0.250%, 0.500%, and 0.750%. The plots of lower to higher cross-link concentrations run from lower to higher stress for each fiber length considered.

Image of FIG. 5.
FIG. 5.

Elastic modulus for fibers 2000, 4000, 6000, and 8000 Å long with different concentrations of cross-links.

Image of FIG. 6.
FIG. 6.

Fiber strength for fiber lengths of 2000, 4000, 6000, and 8000 Å with increasing cross-link concentrations.

Image of FIG. 7.
FIG. 7.

Elastic modulus for fibers 2000, 4000, 6000, and 8000 Å long versus approximate average number of cross-links of the core CNTs.

Image of FIG. 8.
FIG. 8.

Fiber strength for fibers 2000, 4000, 6000, and 8000 Å long versus approximate average number of cross-links of the core CNTs.

Image of FIG. 9.
FIG. 9.

Time evolution of the stress and strain for a 4000 Å fiber. The average length of the CNTs in the fiber is 1000 Å with a standard deviation of 200 Å. The initial percentages of cross-links in the fibers are 0.25 and 0.75.

Image of FIG. 10.
FIG. 10.

Rupture of CNTs in the longer fibers with higher concentrations of cross-links.

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/content/aip/journal/jcp/134/20/10.1063/1.3594197
2011-05-27
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Very-high-strength (60-GPa) carbon nanotube fiber design based on molecular dynamics simulations
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/20/10.1063/1.3594197
10.1063/1.3594197
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