Fig. 7: Transmigration order parameter.
From: The crucial role of adhesion in the transmigration of active droplets through interstitial orifices
We plot the time evolution of χ(t) = AC(t)/AT(t), where AC represents the area fraction of droplet between the centerline (located at l/2) and the exit of the pore (placed at l), and AT is the total area of the droplet within the pore. If λ ≃ 0.8, χ(t) grows rapidly towards 1 following an approximately linear behavior. For decreasing values of χ one can distinguish three regimes: a fast-growing approximately linear one at the entry of the pore, a short stationary one (lasting longer for narrower interstices) with a temporary negative slope in the middle, and a final slow-growing one at the exit. The inner snapshot shows an instantaneous configuration of the transmigration with λ ≃ 0.2.
