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Science 19 August 2005
DOI: 10.1126/science.1112399


Abstract
 Premelting at Defects Within Bulk Colloidal Crystals
A. M. Alsayed, M. F. Islam, J. Zhang, P. J. Collings, A. G. Yodh

Supporting Online Material

This supplement contains:

Movies S1 to S3

To view these movies, download a QuickTime viewer.

    Movie 1
    Grain boundary in a microgel colloidal crystal at 27.2°C. In the movie, the image plane is scanned through ~fifteen layers of the crystal in the (111) direction. The grain boundary is composed of an array of dislocations and separates two crystallites that have slightly different orientations.

    Movie 2
    Grain boundary in a microgel colloidal crystal at 28.0°C. In the movie, the image plane is scanned through ~fifteen layers of the crystal in the (111) direction. The grain boundary has started to premelt. Particles near the grain boundary experience liquid-like diffusion.

    Movie 3
    Grain boundary in a microgel colloidal crystal at 28.1°C. In the movie, the image plane is scanned through ~fifteen layers of the crystal in the (111) direction. The finite width of the premelt region is now clearly evident.

    Captions added 8 August 2005.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)