Summary
The process of colloidal crystallization has already been separately investigated by light scattering mearurements of the crystalline order (Bragg peaks) and of long-ranged density fluctuations (small-angle scattering). We present the firstsimultaneous small- and large-angle light scattering experiment. Our measurements have been performed on hard-sphere colloids of different particle densities. We show results for the temporal evolution of crystallization and find two distinct regimes: homogeneous nucleation and diffusion- or reaction-limited growth at early times, followed by ripening of the Lifshitz-Slyozov or Lifshitz-Allen-Cahn type. To our preliminary experience, we can already state that the results are always consistent in both partial experiments.
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With deep regret we have to announce that Prof. Klaus Schätzel, who inspired and guided the work presented here, has died in October 1994.
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Heymann, A., Stipp, A. & Schätzel, K. Scaling in colloidal crystallization. Il Nuovo Cimento D 16, 1149–1157 (1994). https://doi.org/10.1007/BF02458795
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DOI: https://doi.org/10.1007/BF02458795