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29 March 2024
 
  » arxiv » 1006.4340

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Ordering Dynamics of Blue Phases: Kinetic Stabilization of Amorphous Networks
O. Henrich ; K. Stratford ; D. Marenduzzo ; M. E. Cates ;
Date 22 Jun 2010
AbstractThe cubic blue phases of liquid crystals are fascinating and technologically promising examples of hierarchically structured soft materials, comprising ordered networks of defect lines (disclinations) within a liquid crystalline matrix. We present the first large-scale simulations of their domain growth, starting from a blue phase nucleus within a supercooled isotropic or cholesteric background. The nucleated phase is thermodynamically stable; one expects its slow orderly growth, creating a bulk cubic. Instead, we find that the strong propensity to form disclinations drives the rapid disorderly growth of a metastable amorphous defect network. During this process the original nucleus is destroyed; re-emergence of the stable phase may therefore require a second nucleation step. Our findings suggest that blue phases exhibit hierarchical behavior in their ordering dynamics, to match that in their structure.
Source arXiv, 1006.4340
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