Ratchet Device with Broken Friction Symmetry
Journal article, 2002

An experimental setup (gadget) has been made for demonstration of a ratchet mechanism induced by broken symmetry of a dependence of dry friction on external forcing. This gadget converts longitudinal oscillating or fluctuating motion into a unidirectional rotation, the direction of which is in accordance with given theoretical arguments. Despite the setup being three dimensional, the ratchet rotary motion is proved to be described by one simple dynamic equation. This kind of motion is a result of the interplay of friction and inertia.


Bengt Nordén

Department of Physical Chemistry

Y. Zolotaryuk

P. Christiansen

A. Zolotaryuk

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 80 4 2601-2603

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)


Life Science Engineering (2010-2018)

Materials Science

Subject Categories

Physical Chemistry


Basic sciences



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