Controlling three-dimensional vortices using multiple and moving external fields

Nirmali Prabha Das and Sumana Dutta
Phys. Rev. E 96, 022206 – Published 9 August 2017

Abstract

Spirals or scroll wave activities in cardiac tissues are the cause of lethal arrhythmias. The external control of these waves is thus of prime interest to scientists and physicians. In this article, we demonstrate the spatial control of scroll waves by using external electric fields and thermal gradients in experiments with the Belousov-Zhabotinsky reaction. We show that a scroll ring can be made to trace cyclic trajectories under a rotating electric field. Application of a thermal gradient in addition to the electric field deflects the motion and changes the nature of the trajectory. Our experimental results are analyzed and corroborated by numerical simulations based on an excitable reaction diffusion model.

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  • Received 26 May 2017

DOI:https://doi.org/10.1103/PhysRevE.96.022206

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nonlinear Dynamics

Authors & Affiliations

Nirmali Prabha Das and Sumana Dutta*

  • Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India

  • *sumana@iitg.ernet.in

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Issue

Vol. 96, Iss. 2 — August 2017

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