In systems possessing spatial or dynamical symmetry breaking, Brownian motion combined
with unbiased external input signals, deterministic and random alike, can assist directed …

An overview is given of the possible applications of nanotechnology to optimise existing
separation methods and to enable new methods. Attention is paid to nanotechnological …

A fully reconfigurable two-dimensional (2D) rocking ratchet system created with holographic
optical micromanipulation is presented. We can generate optical potentials with the …

All devices realized so far that control the motion of magnetic flux quanta employ either
samples with nanofabricated spatially-asymmetric potentials (which strongly limit …

The one-dimensional motion of a massless Brownian particle on a symmetric periodic
substrate can be rectified by reinjecting its driving noise through a realistic recycling …

Microscopic self-propelled swimmers capable of autonomous navigation through complex
environments provide appealing opportunities for localization, pick-up and delivery of micro …

The nonequilibrium escape dynamics in a bistable system under the influence of two
Gaussian noises, one obtained by recycling, the other with a constant delay time, is shown …

Brownian motion on a symmetric vibrated periodic substrate is shown to be extremely
sensitive to the particle mass even in the regime of large damping. This phenomenon is the …

Ratchets formed from spatially asymmetric confining potentials can rectify an oscillatory
driving force and generate directed motion. Such devices can probe the fundamental nature …

We numerically investigate the transport of a suspended overdamped Brownian particle
which is driven through a two-dimensional rectangular array of circular obstacles with finite …