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Motivated by recent experiments on the electro-hydrodynamic instability of spin-cast
polymer films, we study the undulation instability of a thin viscoelastic polymer film
under in-plane stress and in the presence of either a close by contactor or an electric
field, both inducing a normal stress on the film surface. We find that the in-plane stress
affects both the typical timescale of the instability and the unstable wavelengths. The
film stability...
We study molecular motor-induced microtubule self-organization in dilute and semi-dilute
filament solutions. In the dilute case, we use a probabilistic model of microtubule
interaction via molecular motors to investigate microtubule bundle dynamics. Microtubules
are modeled as polar rods interacting through fully inelastic, binary collisions. Our
model indicates that initially disordered systems of interacting rods exhibit an
orientational instability...
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