The topology and morphology of bicontinuous interfaces during coarseningY. Kwon1, K. Thornton2 and P. W. Voorhees1
1 Department of Materials Science and Engineering, Northwestern University - 2220 Campus Dr., Evanston, IL 60208-3108, USA
2 Department of Materials Science and Engineering, University of Michigan - 2300 Hayward St., Ann Arbor, MI 48109-2136, USA
received 8 October 2008; accepted in final form 21 April 2009; published May 2009
published online 29 May 2009
We investigate the late-stage coarsening of three-dimensional two-phase mixtures via conserved dynamics over a range of volume fractions. We find that the phases remain bicontinuous at volume fractions as low as 36%. The morphologies of these bicontinuous structures depend on the volume fraction, and they differ from the corresponding structure of a symmetric mixture coarsening via nonconserved dynamics. However, these structures have nearly the same scaled genus of approximately 0.13, possibly indicating a universality in the topology of bicontinous structures undergoing self-similar coarsening.
64.60.A- - Specific approaches applied to studies of phase transitions.
64.75.Va - Phase separation and segregation in polymer blends/polymeric solutions.
64.75.Op - Phase separation and segregation in alloying.
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