A Nanotube Story with a Twist

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Science  31 Oct 2003:
Vol. 302, Issue 5646, pp. 749
DOI: 10.1126/science.302.5646.749a

Singlewalled and multiwalled carbon nanotubes exhibit a variety of electronic and mechanical properties, which have earmarked them as strong candidates for potential applications in the fields of nanoelectronics and nanoactuators. For example, recent work has shown that when the nanotubes are in contact with a substrate, the electronic properties of the junction are dependent on the registry between the atomic structure of the nanotubes and that of the underlying substrate. Gartstein et al. have carried out calculations showing that as carbon nanotubes are stretched, compressed, or injected with charge carriers, they twist around, the extent of twisting depending on their chirality. It is therefore possible to envisage structures in which adding this degree of torsional control could lead to the development of novel devices and sensors. — ISO

Phys. Rev. B 68, 115415 (2003).

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