Issue |
EPL
Volume 95, Number 3, August 2011
|
|
---|---|---|
Article Number | 38004 | |
Number of page(s) | 6 | |
Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
DOI | https://doi.org/10.1209/0295-5075/95/38004 | |
Published online | 19 July 2011 |
Huge broadening of the crystal-fluid interface for sedimenting colloids
1
Institut für Theoretische Physik, Heinrich-Heine-Universität Düsseldorf - D-40225 Düsseldorf, Germany
2
Joint Institute for High Temperatures, Russian Academy of Sciences - Izhorskaya 13/19 , 117419 Moscow, Russia
3
Department of Physics, Case Western Reserve University - Cleveland, 44106 OH, USA
Received:
16
April
2011
Accepted:
20
June
2011
For sedimenting colloidal hard spheres, the propagation and broadening of the crystal-fluid interface is studied by Brownian dynamics computer simulations of an initially homogeneous sample. Two different types of interface broadenings are observed: the first occurs during growth and is correlated with the interface velocity, the second is concomitant with the splitting of the crystal-fluid interface into the crystal-amorphous and amorphous-liquid interfaces. The latter width is strongly peaked as a function of the gravitational driving strength with a huge amplitude relative to its equilibrium counterpart.
PACS: 82.70.Dd – Colloids / 61.20.Qg – Structure of associated liquids: electrolytes, molten salts, etc. / 87.15.A- – Theory, modeling, and computer simulation
© EPLA, 2011
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