Conflict of interest: none to declare.
Modulation of the shape and speed of a chemical wave in an unstirred Belousov–Zhabotinsky reaction by a rotating magnet†
Article first published online: 1 NOV 2012
Copyright © 2012 Wiley Periodicals, Inc.
Volume 34, Issue 3, pages 220–230, April 2013
How to Cite
Okano, H. and Kitahata, H. (2013), Modulation of the shape and speed of a chemical wave in an unstirred Belousov–Zhabotinsky reaction by a rotating magnet. Bioelectromagnetics, 34: 220–230. doi: 10.1002/bem.21763
- Issue published online: 7 MAR 2013
- Article first published online: 1 NOV 2012
- Manuscript Accepted: 21 SEP 2012
- Manuscript Received: 28 MAY 2012
- Grand-in-Aid for Young Scientists B (to H.K.). Grant Number: 21740282
- rotating magnetic fields;
- static magnetic fields;
- chemical wave propagation;
- Belousov–Zhabotinsky (BZ) reaction
The objective of this study was to observe whether a rotating magnetic field (RMF) could change the anomalous chemical wave propagation induced by a moderate-intensity gradient static magnetic field (SMF) in an unstirred Belousov–Zhabotinsky (BZ) reaction. The application of the SMF (maximum magnetic flux density = 0.22 T, maximum magnetic flux density gradient = 25.5 T/m, and peak magnetic force product (flux density × gradient) = 4 T2/m) accelerated the propagation velocity in a two-dimensional pattern. Characteristic anomalous patterns of the wavefront shape were generated and the patterns were dependent on the SMF distribution. The deformation and increase in the propagation velocity were diminished by the application of an RMF at a rotation rate of 1 rpm for a few minutes. Numerical simulation by means of the time-averaged value of the magnetic flux density gradient or the MF gradient force over one rotation partially supported the experimental observations. These considerations suggest that RMF exposure modulates the chemical wave propagation and that the degree of modulation could be, at least in part, dependent on the time-averaged MF distribution over one rotation. Bioelectromagnetics 34:220–230, 2013. © 2012 Wiley Periodicals, Inc.