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Fluid mechanics

When shape matters

Nature volume 476, pages 286–287 (2011)Cite this article

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The well-known boundaries of coffee stains are caused by the outward flow of particles suspended in the liquid. Experiments show that ellipsoidal particles can prevent the formation of such boundaries. See Letter p.308

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Figure 1: Preventing the coffee-ring effect.

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  1. Jan Vermant is in the Department of Chemical Engineering, Katholieke Universiteit Leuven, 3001 Leuven, Belgium.,

    Jan Vermant

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  1. Jan Vermant
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Correspondence to Jan Vermant.

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Vermant, J. When shape matters. Nature 476, 286–287 (2011). https://doi.org/10.1038/476286a

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