A 2D model of a droplet on a soft substrate predicts that surface-energy gradients can drive droplet motion with experimentally feasible magnitudes, while elastic-modulus gradients cannot.
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Gradient Induced Droplet Motion Over Soft Solids
A 2D model of a droplet on a soft substrate predicts that surface-energy gradients can drive droplet motion with experimentally feasible magnitudes, while elastic-modulus gradients cannot.