Related Experiment Video
Updated: Aug 7, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
Published on: January 28, 2022
Periodic forcing of scroll rings and control of Winfree turbulence in excitable media
S Alonso1, F Sagués, A S Mikhailov
1Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
Abstract:
By simulations of the Barkley model, action of uniform periodic nonresonant forcing on scroll rings and wave turbulence in three-dimensional excitable media is investigated. Sufficiently strong rapid forcing converts expanding scroll rings into the collapsing ones and suppresses the Winfree turbulence caused by the negative tension of wave filaments. Slow strong forcing has an opposite effect, leading to expansion of scroll rings and induction of the turbulence. These effects are explained in the framework of the phenomenological kinematic theory of scroll waves.
Related Concept Videos
Forced Oscillations
Damped Oscillations
Although friction and other non-conservative...
Types of Damping
Oscillations In An LC Circuit
Steady, Laminar Flow Between Parallel Plates
Load-frequency control

