Spatiotemporal Dynamics of Oscillatory Cellular Patterns in Three-Dimensional Directional Solidification

N. Bergeon, D. Tourret, L. Chen, J.-M. Debierre, R. Guérin, A. Ramirez, B. Billia, A. Karma, and R. Trivedi
Phys. Rev. Lett. 110, 226102 – Published 28 May 2013
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Abstract

We report results of directional solidification experiments conducted on board the International Space Station and quantitative phase-field modeling of those experiments. The experiments image for the first time in situ the spatially extended dynamics of three-dimensional cellular array patterns formed under microgravity conditions where fluid flow is suppressed. Experiments and phase-field simulations reveal the existence of oscillatory breathing modes with time periods of several 10’s of minutes. Oscillating cells are usually noncoherent due to array disorder, with the exception of small areas where the array structure is regular and stable.

  • Received 25 February 2013

DOI:https://doi.org/10.1103/PhysRevLett.110.226102

© 2013 American Physical Society

Authors & Affiliations

N. Bergeon1,*, D. Tourret2,†, L. Chen1, J.-M. Debierre1, R. Guérin1, A. Ramirez1, B. Billia1, A. Karma2, and R. Trivedi3

  • 1Institut Matériaux Microélectronique Nanosciences de Provence, Aix-Marseille Université and CNRS UMR 7334, Campus Saint-Jérôme, Case 142, 13397 Marseille Cedex 20, France
  • 2Department of Physics and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, Massachusetts 02115, USA
  • 3Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50010, USA

  • *nathalie.bergeon@im2np.fr
  • d.tourret@neu.edu

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Issue

Vol. 110, Iss. 22 — 31 May 2013

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