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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Article dans une revue
Physical Review Letters, American Physical Society, 2005, 95 (2), pp.027801
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00181087
Contributeur : Patrick Oswald <>
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Dernière modification le : mardi 16 janvier 2018 - 16:00:37
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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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