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Different folding patterns as a function of the ratio of shear moduli mu(s)/mu(c) of cortex/core

mu(s) is the shear modulus of the cortex
mu(c) is the shear modulus of the core
A/B = outer/inner radius of cortex
Evolution steps = increasing gt, in which
gt = sqrt(deformed/undeformed) cortex outer surface area
gs, gc = growth rates of cortex, core

From the same paper as the previous 2 slides.

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