Related Experiment Video
Updated: Jul 28, 2026

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Soliton ratchets
Mario Salerno1, Niurka R Quintero
1Dipartimento di Fisica "E.R. Caianiello" and Istituto Nazionale di Fisica della Materia (INFM), Universitá di Salerno, I-84081 Baronissi, Salerno, Italy.
Abstract:
The mechanism underlying the soliton ratchet, both in absence and in presence of noise, is investigated. We show the existence of an asymmetric internal mode on the soliton profile that couples, through the damping in the system, to the soliton translational mode. Effective soliton transport is achieved when the internal mode and the external force are phase locked. We use as a working model a generalized double sine-Gordon equation. The phenomenon is expected to be valid for generic soliton systems.
Related Concept Videos
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must have a...
Frictional Forces on Screws
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
Self-Locking Screw
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
Stresses in a Shaft
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
Angle of Twist: Problem Solving
Tetanus

