Volume 86, Number 4, May 2009
Article Number 46005
Number of page(s) 5
Section Condensed Matter: Structural, Mechanical and Thermal Properties
Published online 29 May 2009
EPL, 86 (2009) 46005
DOI: 10.1209/0295-5075/86/46005

The topology and morphology of bicontinuous interfaces during coarsening

Y. 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.

© EPLA 2009