Defect-antidefect correlations in a lyotropic liquid crystal from a cosmological point of view

Details Defect-antidefect correlations in a lyotropic liquid crystal from a cosmological point of view Defect-antidefect correlations in a lyotropic liquid crystal from a cosmological point of view

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrve..75f1704m&link_type=abstract

Physical Review E, vol. 75, Issue 6, id. 061704

Physics

9

Lyotropic Phases, Defects In Liquid Crystals, Particle-Theory And Field-Theory Models Of The Early Universe, Transitions In Liquid Crystals

Scientific paper

In this work, we analyze the defect and antidefect distribution in the nematic calamitic phase of a lyotropic liquid crystal [the ternary mixture formed by potassium laurate (KL), decanol (DeOH), and water]. We obtain defects with wedge disclinations of strength ±1/2 , and the scaling exponent determined by the defect-antidefect correlation was 0.29±0.07 . This value is in good agreement with the theoretical value of 1/4 obtained by the Kibble mechanism. The constant of the scaling relation of the defect and antidefect distribution is also discussed. We compare our results with the values obtained by Digal [Phys. Rev. Lett. 83, 5030 (1999)] who used a thermotropic liquid crystal.

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