Tomography of Reaction-Diffusion Microemulsions Reveals Three-Dimensional Turing Patterns
Abstract
Spatially periodic, temporally stationary patterns that emerge from instability of a homogeneous steady state were proposed by Alan Turing in 1952 as a mechanism for morphogenesis in living systems and have attracted increasing attention in biology, chemistry, and physics. Patterns found to date have been confined to one or two spatial dimensions. We used tomography to study the Belousov-Zhabotinsky reaction in a microemulsion in which the polar reactants are confined to aqueous nanodroplets much smaller than the scale of the stationary patterns. We demonstrate the existence of Turing patterns that can exist only in three dimensions, including curved surfaces, hexagonally packed cylinders, spots, and labyrinthine and lamellar patterns.
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Science
Volume 331 | Issue 6022
11 March 2011
11 March 2011
Copyright
Copyright © 2011, American Association for the Advancement of Science.
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Submission history
Received: 23 November 2010
Accepted: 26 January 2011
Published in print: 11 March 2011
Acknowledgments
We thank M. Hauser for helpful discussions, J. Carballido-Landeira for preliminary experiments, and F. Mello for assistance in constructing the tomography apparatus. This work was funded by the NSF under grants CHE-0615507, CHE-0526866, and NSF Materials Research Science and Engineering Center grant DMR-0820492 and a U.S.-Hungarian Cooperative Grant. I.R.E. thanks the Radcliffe Institute for a fellowship.
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