Topologically non-equivalent textures generated by the nematic electrohydrodynamics. Issue 4 (16th March 2019)

• Record Type: Journal Article
• Authors: Pucci, G.; Carbone, F.; Lombardo, G.; Versace, C.; Barberi, R.
• Is Part Of: Liquid crystals. Volume 46:Issue 4(2019)
• Page Start: 649
• Page End: 654
• Publication Date: 2019-03-16
• Subjects: Nematic liquid crystals -- twist deformation -- topological defects -- electrohydrodynamics; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2018.1555649
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Some classes of nematic liquid crystals can be driven through turbulent regimes when forced by an external electric field. In contrast to isotropic fluids, a turbulent nematic exhibits a transition to a stochastic regime that is characterised by a network of topological defects. We study the deformations arising after the electric field has been switched-off. In contrast to the turbulent regime, the relaxation of this topological-defect regime involves the annihilation of an interlacement of defect lines. We show that these defect lines separate regions of the nematic having topologically non-equivalent textures. Graphical Abstract: