The Coffee Ring Effect (VIDEO)

University of Pennsylvania

Caption

Penn physicists recently shown that simply changing particle shape can eliminate the ring-shaped stain that is left behind when drops of certain liquids dry. In this video microscopy footage from their experiments, watch as spherical particles get swept to the edges, while oblong particles are distributed consistently.

Credit

Kurtis Sensenig, University of Pennsylvania

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Please credit Kurtis Sensenig, University of Pennsylvania, and respect embargo time of Aug 17, 13:00 Eastern.

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