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Poster: Liquid-like response of gels
70th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion
A steel sphere (R=2.25 mm, for all images) shot from an air rifle passes through gelatin (of shear modulus G ~70 Pa) forming a shallow seal cavity reminiscent of a stained glass window (left image). The blue light cast by one of the flashes captures the contours of the cavity formed in the wake as the sphere rips the gelatin open and elasticity closes it quickly from behind. The emergence of the surface texture, which is not visible in the upper panels, is likely due to nonuniformities in thedoi:10.1103/aps.dfd.2017.gfm.p0029 fatcat:t5brmqfpjzdk7mc7gdx6z2pvrm