Typical snapshot from molecular dynamics simulations of the formation of a one-micron-long S-shaped carbon nanotube structure (serpentine) on a stepped graphite substrate.

From the article:

Dynamics of the Formation of Carbon Nanotube Serpentines
L. D. Machado, S. B. Legoas, J. S. Soares, N. Shadmi, A. Jorio, E. Joselevich, and D. S. Galvão
Phys. Rev. Lett. 110, 105502 (2013)

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