Dynamics of colloidal particles in ice.

  title={Dynamics of colloidal particles in ice.},
  author={Melissa J. Spannuth and Simon G. J. Mochrie and S. S. L. Peppin and John S. Wettlaufer},
  journal={The Journal of chemical physics},
  volume={135 22},
We use x-ray photon correlation spectroscopy (XPCS) to probe the dynamics of colloidal particles in polycrystalline ice. During freezing, the dendritic ice morphology and rejection of particles from the ice created regions of high particle density, where some of the colloids were forced into contact and formed disordered aggregates. The particles in these high density regions underwent ballistic motion, with a characteristic velocity that increased with temperature. This ballistic motion is… 
14 Citations
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X-ray photon correlation spectroscopy.
  • O. Shpyrko
  • Physics, Medicine
    Journal of synchrotron radiation
  • 2014
The basic principles of X-ray photon correlation spectroscopy are reviewed, some novel approaches to XPCS analysis are discussed, and a discussion of the future impact of diffraction-limited storage rings on new types of X PCS experiments is discussed.
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Surface phase transitions in ice: from fundamental interactions to applications
  • J. Wettlaufer
  • Medicine
    Philosophical Transactions of the Royal Society A
  • 2019
A range of settings in which the bulk and surface behaviour can interact on equal footing are discussed, including the dynamic and thermodynamic behaviour of floating sea ice, the freezing and drying of colloidal suspensions (such as soil) and the mechanisms of protoplanetesimal formation by inter-particle collisions in accretion discs.


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