Backflow-Induced Asymmetric Collapse of Disclination Lines in Liquid Crystals

Abstract : 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 faster than -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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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00181087
Contributor : Patrick Oswald <>
Submitted on : Wednesday, October 24, 2007 - 7:08:24 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
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Patrick Oswald, Jordi Ignes-Mullol. Backflow-Induced Asymmetric Collapse of Disclination Lines in Liquid Crystals. Physical Review Letters, American Physical Society, 2005, 95 (2), pp.027801. ⟨ensl-00181087⟩

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