Crystallization of Charged Colloids under Microgravity during Aircraft Parabolic Flights

DOI

Abstract

We studied crystallization process of charged colloids under microgravity (µG) by performing time resolved reflection spectroscopy, during aircraft parabolic flight experiments. We used dilute colloidal silica samples (specific gravity of the particles = 2.1, the particle concentration = 1 – 2 vol.%) that crystallized from shear-melt colloids, within the duration time of µG (approximately 20 seconds). An influence of µG was found to be less significant for the heterogeneous nucleation process with the aid of the cell walls. The incubation times of the homogeneous nucleation, τ, at µG was longer than that at 1G. Furthermore, the half-widths of the Bragg diffraction peaks from the crystals were narrower by 30% at the largest, under µG. This suggests that the crystal grain size (cross-sectional area) became larger under µG environment, according to the Scherrer’s relation.

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Details 詳細情報について

  • CRID
    1390002184853150080
  • NII Article ID
    130007768947
  • DOI
    10.15011/jasma.35.3.350303
  • ISSN
    21889783
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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