## Crystal nuclei and structural correlations in two-dimensional colloidal mixtures : experiment versus simulation

2009
Assoud, Lahcen
Ebert, Florian
Messina, René
Löwen, Hartmut
Journal article
##### Published in
Journal of Physics / Condensed Matter ; 21 (2009). - 464114
##### Abstract
We examine binary mixtures of superparamagnetic colloidal particles confined to a two-dimensional water air interface both by real-space experiments and Monte Carlo computer simulations at high coupling strength. In the simulations, the interaction is modelled as a pairwise dipole dipole repulsion. While the ratio of magnetic dipole moments is fixed, the interaction strength governed by the external magnetic field and the relative composition is varied. Excellent agreement between simulation and experiment is found for the partial pair distribution functions including the fine structure of the neighbour shells at high coupling. Furthermore local crystal nuclei in the melt are identified by bond-orientational order parameters and their contribution to the pair structure is discussed.
530 Physics
##### Keywords
crystal nuclei,bond-orientational order parameters,heterogeneous nucleation
##### Cite This
ISO 690ASSOUD, Lahcen, Florian EBERT, Peter KEIM, René MESSINA, Georg MARET, Hartmut LÖWEN, 2009. Crystal nuclei and structural correlations in two-dimensional colloidal mixtures : experiment versus simulation. In: Journal of Physics / Condensed Matter. 21, 464114. Available under: doi: 10.1088/0953-8984/21/46/464114
BibTex
@article{Assoud2009Cryst-4825,
year={2009},
doi={10.1088/0953-8984/21/46/464114},
title={Crystal nuclei and structural correlations in two-dimensional colloidal mixtures : experiment versus simulation},
volume={21},
journal={Journal of Physics / Condensed Matter},
author={Assoud, Lahcen and Ebert, Florian and Keim, Peter and Messina, René and Maret, Georg and Löwen, Hartmut},
note={Article Number: 464114}
}

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