Interlayer Forces and Ultralow Sliding Friction in Multiwalled Carbon Nanotubes
- 11 July 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 97 (2), 025501
- https://doi.org/10.1103/physrevlett.97.025501
Abstract
We describe interlayer force measurements during prolonged, cyclic telescoping motion of a multiwalled carbon nanotube. The force acting between the core and the outer casing is modulated by the presence of stable defects and generally exhibits ultralow friction, below the measurement limit of and total dissipation per cycle lower than . Defects intentionally introduced in the form of dangling bonds lead to temporary mechanical dissipation, but the innate ability of nanotubes to self heal rapidly optimizes the atomic structure and restores smooth motion.
Keywords
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