Confocal image of small silica colloids gathered into blobs (red) and large silica microspheres (green). Selected for an Editors’ Suggestion.

From the article:

Flow-Switched Bistability in a Colloidal Gel with Non-Brownian Grains
Yujie Jiang, Soichiro Makino, John R. Royer, and Wilson C. K. Poon
Phys. Rev. Lett. 128, 248002 (2022)

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