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arXiv · 2206.02504

The Smallest Archimedean Screw: Facet Dynamics and Friction in Multi-Walled Nanotubes

Roberto Guerra·Itai Leven·Andrea Vanossi·Oded Hod·Erio Tosatti
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Abstract

We identify a new material phenomenon, where minute mechanical manipulations induce pronounced global structural reconfigurations in faceted multi-walled nanotubes. This behavior has strong implications on the tribological properties of these systems and may be the key to understand the enhanced inter-wall friction recently measured for boron-nitride nanotubes with respect to their carbon counterparts. Notably, the fast rotation of helical facets in these systems upon coaxial sliding may serve as a nanoscale Archimedean screw for directional transport of physisorbed molecules.

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Roberto Guerra, Itai Leven, Andrea Vanossi, Oded Hod, Erio Tosatti. 2022-06-06. The Smallest Archimedean Screw: Facet Dynamics and Friction in Multi-Walled Nanotubes. https://doi.org/10.1021/acs.nanolett.7b01718

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