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Effect of Topological Defects on Buckling Behavior of Single-walled Carbon Nanotube

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ABSTRACT

Molecular dynamic simulation method has been employed to consider the critical buckling force, pressure, and strain of pristine and defected single-walled carbon nanotube (SWCNT) under axial compression. Effects of length, radius, chirality, Stone–Wales (SW) defect, and single vacancy (SV) defect on buckling behavior of SWCNTs have been studied. Obtained results indicate that axial stability of SWCNT reduces significantly due to topological defects. Critical buckling strain is more susceptible to defects than critical buckling force. Both SW and SV defects decrease the buckling mode of SWCNT. Comparative approach of this study leads to more reliable design of nanostructures.

No MeSH data available.


Related in: MedlinePlus

Critical buckling strains versus length of pristine, Stone–Wales (SW)-defected, and single vacancy (SV)-defected armchair (6,6) and zigzag (6,0) SWCNTs.
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Figure 5: Critical buckling strains versus length of pristine, Stone–Wales (SW)-defected, and single vacancy (SV)-defected armchair (6,6) and zigzag (6,0) SWCNTs.

Mentions: Sammalkorpi et al. [39] confirmed that mechanical properties of defected nanotubes depend on the chirality; they found 50% lower critical strain for defected SWCNT. Liew et al. [40] declared that CNT bundles show higher critical buckling force and lower critical buckling strain by growth of the radius. Cao and Chen [34] found critical buckling strain of 0.11–0.13 for zigzag SWCNTs, which is consistent with presented results in Table 2 and Figure 5.


Effect of Topological Defects on Buckling Behavior of Single-walled Carbon Nanotube
Critical buckling strains versus length of pristine, Stone–Wales (SW)-defected, and single vacancy (SV)-defected armchair (6,6) and zigzag (6,0) SWCNTs.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211344&req=5

Figure 5: Critical buckling strains versus length of pristine, Stone–Wales (SW)-defected, and single vacancy (SV)-defected armchair (6,6) and zigzag (6,0) SWCNTs.
Mentions: Sammalkorpi et al. [39] confirmed that mechanical properties of defected nanotubes depend on the chirality; they found 50% lower critical strain for defected SWCNT. Liew et al. [40] declared that CNT bundles show higher critical buckling force and lower critical buckling strain by growth of the radius. Cao and Chen [34] found critical buckling strain of 0.11–0.13 for zigzag SWCNTs, which is consistent with presented results in Table 2 and Figure 5.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Molecular dynamic simulation method has been employed to consider the critical buckling force, pressure, and strain of pristine and defected single-walled carbon nanotube (SWCNT) under axial compression. Effects of length, radius, chirality, Stone–Wales (SW) defect, and single vacancy (SV) defect on buckling behavior of SWCNTs have been studied. Obtained results indicate that axial stability of SWCNT reduces significantly due to topological defects. Critical buckling strain is more susceptible to defects than critical buckling force. Both SW and SV defects decrease the buckling mode of SWCNT. Comparative approach of this study leads to more reliable design of nanostructures.

No MeSH data available.


Related in: MedlinePlus