Photographs of a thin elastic rod surrounded by soft hydrogel beads. The three images show different bead packing fractions.

From the article:

Elastogranular Mechanics: Buckling, Jamming, and Structure Formation
David J. Schunter, Jr., Martin Brandenbourger, Sophia Perriseau, and Douglas P. Holmes
Phys. Rev. Lett. 120, 078002 (2018)

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