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Directed transport induced by asymmetric surface vibrations: making use of friction

D Fleishman, Y Asscher and M Urbakh

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It is shown that making use of frictional interactions allows for an effective directed motion of a block produced by asymmetrical vibrations of the underlying plate. We found that the block dynamics exhibits four different regimes of motion depending on the relationships between the values of the frictional forces and the characteristics of the plate vibrations. The optimal motion of the block can be achieved by tuning the amplitudes and frequencies of the vibrations in a controllable way.


PACS

46.40.-f Vibrations and mechanical waves

46.55.+d Tribology and mechanical contacts

46.70.De Beams, plates and shells

Subjects

Condensed matter: structural, mechanical & thermal

Dates

Issue 9 (7 March 2007)

Received 15 August 2006, in final form 14 December 2006

Published 12 February 2007



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