title: Disorder induced diffusive transport in ratchets.
abstract: The effects of quenched disorder on the overdamped motion of a driven particle on a periodic, asymmetric potential are studied. While for the unperturbed potential the transport is due to a regular drift, the quenched disorder induces a significant additional chaotic "diffusive" motion. Possible applications to experiments in nanoscale surfaces and particle separation are discussed.
authors.affiliation: Department of Physics, Emory University, Atlanta, Georgia 30322, USA.
authors.forename: M N
authors.initials: MN
authors.lastname: Popescu
authors.forename: C M
authors.initials: CM
authors.lastname: Arizmendi
authors.forename: A L
authors.initials: AL
authors.lastname: Salas-Brito
authors.forename: F
authors.initials: F
authors.lastname: Family
mesh_terms: D004058:Diffusion; D008962:Models, Theoretical; D013269:Stochastic Processes