Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
616566 | Tribology International | 2007 | 6 Pages |
Abstract
We demonstrate that lateral vibrations of a substrate can dramatically increase surface diffusivity and mobility and reduce friction at the nanoscale. In contrast to the enhancement of diffusion and mobility that has a resonance nature, the reduction of friction does not exhibit pronounce resonance features. We find an abrupt dilatancy transition from the state with a small tip–surface separation to the state with a large separation as the vibration frequency increases. Dilatancy is shown to play an essential role in dynamics of a nanometer-size tip which interacts with a vibrating surface. Atomic force microscopy (AFM) experiments are suggested which can test the predicted effects.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Z. Tshiprut, A.E. Filippov, M. Urbakh,