Colloidal particles absorbed at the interface of a liquid droplet arrange into unique packings during slow evaporation [V.N. Manoharan et al., Science 301, 483 (2003)]. We present a numerical and theoretical analysis of the packing selection problem. The selection of a unique packing arises almost entirely from geometrical constraints during the drying.
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Lauga et al. (2004) studied this question.
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