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Backflow-induced asymmetric collapse of disclination lines in liquid crystals
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We present experiments where opposed pairs of planar parallel disclination lines of topological strength s=±1 move due to their mutual attraction. Our measurements show that their motion is clearly asymmetric, with +1 defects moving up to twice as fast as -1 ones. This is a clear indication of backflow, given the intrinsic isotropic elasticity of our system. A phenomenological model is able to account for the experimental observations by renormalizing the orientational diffusivity estimated from the velocity of each defect.
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OSWALD, Patrick and IGNÉS I MULLOL, Jordi. Backflow-induced asymmetric collapse of disclination lines in liquid crystals. Physical Review Letters. 2005. Vol. 95, num. 2, pags. 027801-1-027801-4. ISSN 0031-9007. [consulted: 4 of June of 2026]. Available at: https://hdl.handle.net/2445/13265