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From the same paper as the previous image.
Figure 3. Axially buckled SWNT pattern deduced from molecular dynamics simulations. [Left] Upper panel: Energy-strain curve of a (10,10) SWNT with a length of 9.6 nm under axial compression. Lower panel: Typical tube geometry (a) before and (b) after buckling, respectively. [Right] Upper panel: Curve of a compressed (10,10) SWNT with 29.5 nm length. Lower panel: Snapshots of the tube (a) before buckling; (b) after column buckling; and (c) undergoing shell buckling. Reprinted from Reference [121]: Feliciano, J.; Chun Tang, C.; Zhang, Y.Y.; Chen, C.F. Aspect ratio dependent buckling mode transition in single-walled carbon nanotubes under compression. J. Appl. Phys. 2011, 109, 084323.
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