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Physicists discover why drying liquid crystal drops leave unusual 'coffee rings'

Phys.org

Penn alumnus Zoey Davidson, now a postdoc at the Max Planck Institute for Intelligent Systems in Germany, had been experimenting with Sunset Yellow, a dye that gives Doritos and orange soft drinks their bright colors, when he accidentally spilled some of the material.

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Metin Sitti
Director
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Zoey Davidson
Postdoctoral Researcher