Onset of heterogeneous crystal nucleation in colloidal suspensions (original) (raw)

Nature volume 428, pages 404–406 (2004)Cite this article

Abstract

The addition of small ‘seed’ particles to a supersaturated solution can greatly increase the rate at which crystals nucleate. This process is understood, at least qualitatively, when the seed has the same structure as the crystal that it spawns1,2. However, the microscopic mechanism of seeding by a ‘foreign’ substance is not well understood. Here we report numerical simulations of colloidal crystallization seeded by foreign objects. We perform Monte Carlo simulations to study how smooth spherical seeds of various sizes affect crystallization in a suspension of hard colloidal particles. We compute the free-energy barrier associated with crystal nucleation3,4. A low barrier implies that nucleation is easy. We find that to be effective crystallization promoters, the seed particles need to exceed a well-defined minimum size. Just above this size, seed particles act as crystallization ‘catalysts’ as newly formed crystallites detach from the seed. In contrast, larger seed particles remain covered by the crystallites that they spawn. This phenomenon should be experimentally observable and can have important consequences for the control of the resulting crystal size distribution.

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References

  1. Ostwald, W. F. Studien uber die Bildung und Umwandlung fester Korper. Z. Phys. Chem. 22, 289–302 (1897)
    CAS Google Scholar
  2. Kelton, K. E. in Solid State Physics (eds Ehrenreich, H. & Turnbull, D.) Vol. 45 (Academic, New York, 1991)
    Google Scholar
  3. ten Wolde, P. R., Ruiz-Montero, M. J. & Frenkel, D. Numerical calculation of the rate of crystal nucleation in a Lennard-Jones system at moderate undercooling. J. Chem. Phys. 104, 9932–9947 (1996)
    Article ADS CAS Google Scholar
  4. Auer, S. & Frenkel, D. Quantitative prediction of crystal nucleation rates for spherical colloids: A computational approach. Annu. Rev. Phys. Chem. 55, (2004)
  5. Kose, A. & Hachisu, S. Ordered structure in weakly flocculated monodisperse latex. J. Colloid Interf. Sci. 55, 487–498 (1976)
    Article ADS CAS Google Scholar
  6. Dinsmore, A., Warren, P., Poon, W. & Yodh, A. Fluid-solid transitions on walls in binary hard-sphere mixtures. Europhys. Lett. 40, 337–342 (1997)
    Article ADS CAS Google Scholar
  7. Kaplan, P., Rouke, J., Yodh, A. & Pine, D. Entropically driven surface phase separation in binary colloidal mixtures. Phys. Rev. Lett. 72, 582–585 (1994)
    Article ADS CAS Google Scholar
  8. Auer, S. & Frenkel, D. Line tension controls wall-induced crystal nucleation in hard-sphere colloids. Phys. Rev. Lett. 91, 015703 (2003)
    Article ADS CAS Google Scholar
  9. Euler, L. Opera Omnia Series i, Vol. 26 (Orell Füssli, Zurich, 1953)
    MATH Google Scholar
  10. Hilton, P. & Pederson, J. The Euler characteristic and Pólya's dream. Am. Math. Mon. 103, 121–131 (1996)
    MATH Google Scholar
  11. Auer, S. & Frenkel, D. Suppression of crystal nucleation in polydisperse colloids due to increase of the surface free energy. Nature 413, 711–713 (2001)
    Article ADS CAS Google Scholar
  12. Gasser, U., Weeks, E. R., Schofield, A., Pussey, P. N. & Weitz, D. A. Real-space imaging of nucleation and growth in colloidal crystallization. Science 292, 258–262 (2001)
    Article ADS CAS Google Scholar

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Acknowledgements

The work of the FOM Institute is part of the research program of FOM and is made possible by financial support from the Netherlands Organization for Scientific Research (NWO).

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  1. S. Auer
    Present address: Department of Chemistry, Cambridge University, Lensfield Road, Cambridge, CB2 1EW, UK

Authors and Affiliations

  1. FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ, Amsterdam, The Netherlands
    A. Cacciuto

Authors

  1. A. Cacciuto
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  2. S. Auer
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  3. D. Frenkel
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Correspondence toA. Cacciuto.

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Cacciuto, A., Auer, S. & Frenkel, D. Onset of heterogeneous crystal nucleation in colloidal suspensions.Nature 428, 404–406 (2004). https://doi.org/10.1038/nature02397

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