Optical microscope images of a colloidal capsule with an inhomogeneous shell, buckled under an external osmotic pressure; scale bar is 35 μm (top). Numerically simulated shell similar to the experimental capsule; color reflects spatially varying shell thickness (bottom). Elapsed time increases from left to right.
From the article:
Delayed Buckling and Guided Folding of Inhomogeneous CapsulesSujit S. Datta, Shin-Hyun Kim, Jayson Paulose, Alireza Abbaspourrad, David R. Nelson, and David A. Weitz
Phys. Rev. Lett. 109, 134302 (2012)
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