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![(a) Experimental set up. Two parallel glass fibers (E = 64±1 GPa, radius R, length L), separated by a distance 2d and clamped at one end, are removed from a fluid bath at a speed V . Above a critical velocity Vc, the fibers coalesce. (b) Length L of the fibers as a function of the critical velocity Vc. Squares: R = 100 µm; circles: R = 50 µm; diamonds: R = 160 µm, all in silicon oil (µ = 0.96 or 0.096 Pa s). Triangles: R = 50 µm in glycerol. Color: d/R given by the colorbar. (c) At V = 0 m/s, the scaling for L = Ls obtained in Ref. [45] is recovered (solid curve). (d) Estimation of the dynamic capillary force Bd/L 3 as a function of Ca.](publication/366463055/figure/fig1/AS:11431281108752575@1671593872295/a-Experimental-set-up-Two-parallel-glass-fibers-E-641-GPa-radius-R-length-L.png)
(a) Experimental set up. Two parallel glass fibers (E = 64±1 GPa, radius R, length L), separated by a distance 2d and clamped at one end, are removed from a fluid bath at a speed V . Above a critical velocity Vc, the fibers coalesce. (b) Length L of the fibers as a function of the critical velocity Vc. Squares: R = 100 µm; circles: R = 50 µm; diamonds: R = 160 µm, all in silicon oil (µ = 0.96 or 0.096 Pa s). Triangles: R = 50 µm in glycerol. Color: d/R given by the colorbar. (c) At V = 0 m/s, the scaling for L = Ls obtained in Ref. [45] is recovered (solid curve). (d) Estimation of the dynamic capillary force Bd/L 3 as a function of Ca.
Source publication
We study the capillary attraction force between two fibers dynamically withdrawn from a bath. We propose an experimental method to measure this force and show that its magnitude strongly increases with the retraction speed by up to a factor ten compared to the static case. We show that this remarkable increase stems from the shape of the dynamical...
