Structural stability and energetics of single-walled carbon nanotubes under uniaxial strain

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2003-01-15

Author

Dereli, G
Ozdogan, C

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A (10x10) single-walled carbon nanotube consisting of 400 atoms with 20 layers is simulated under tensile loading using our developed O(N) parallel tight-binding molecular-dynamics algorithms. It is observed that the simulated carbon nanotube is able to carry the strain up to 122% of the relaxed tube length in elongation and up to 93% for compression. Young's modulus, tensile strength, and the Poisson ratio are calculated and the values found are 0.311 TPa, 4.92 GPa, and 0.287, respectively. The stress-strain curve is obtained. The elastic limit is observed at a strain rate of 0.09 while the breaking point is at 0.23. The frequency of vibration for the pristine (10x10) carbon nanotube in the radial direction is 4.71x10(3) GHz and it is sensitive to the strain rate.

Subject Keywords

Condensed Matter Physics

URI

https://hdl.handle.net/11511/65672

Journal

PHYSICAL REVIEW B

DOI

https://doi.org/10.1103/physrevb.67.035416

Collections

Department of Physics, Article

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Citation Formats

G. Dereli and C. Ozdogan, “Structural stability and energetics of single-walled carbon nanotubes under uniaxial strain,” PHYSICAL REVIEW B, pp. 0–0, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65672.