A single-walled carbon nanotube of 75 nanometers can stretch to 84 nanometers before it breaks.

J. Y. Huang, S. Chen, Z. Q. Wang, K. Kempa, Y. M. Wang, S. H. Jo, G. Chen, M. S. Dresselhaus, Z. F. Ren. Nature 439, 281 (2006).

Image courtesy: Dr. J. Huang, SNL.