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dc.contributor.authorMAJUMDAR, APALA
dc.date.accessioned2016-02-28T06:33:04Z
dc.date.available2016-02-28T06:33:04Z
dc.date.issued2011-09-06
dc.identifier.citationMAJUMDAR A (2011) The radial-hedgehog solution in Landau–de Gennes’ theory for nematic liquid crystals. European Journal of Applied Mathematics 23: 61–97. Available: http://dx.doi.org/10.1017/S0956792511000295.
dc.identifier.issn0956-7925
dc.identifier.issn1469-4425
dc.identifier.doi10.1017/S0956792511000295
dc.identifier.urihttp://hdl.handle.net/10754/599949
dc.description.abstractWe study the radial-hedgehog solution in a three-dimensional spherical droplet, with homeotropic boundary conditions, within the Landau-de Gennes theory for nematic liquid crystals. The radial-hedgehog solution is a candidate for a global Landau-de Gennes minimiser in this model framework and is also a prototype configuration for studying isolated point defects in condensed matter physics. The static properties of the radial-hedgehog solution are governed by a non-linear singular ordinary differential equation. We study the analogies between Ginzburg-Landau vortices and the radial-hedgehog solution and demonstrate a Ginzburg-Landau limit for the Landau-de Gennes theory. We prove that the radial-hedgehog solution is not the global Landau-de Gennes minimiser for droplets of finite radius and sufficiently low temperatures and prove the stability of the radial-hedgehog solution in other parameter regimes. These results contain quantitative information about the effect of geometry and temperature on the properties of the radial-hedgehog solution and the associated biaxial instabilities. © Copyright Cambridge University Press 2011.
dc.description.sponsorshipThis publication is based on work supported by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST) to the Oxford Centre for Collaborative Applied Mathematics. The author gratefully acknowledges stimulating discussions with Chong Luo, Valeriy Slastikov and Epifanio Virga. We thank Luc Nguyen and Arghir Zarnescu for helpful comments and suggestions on an earlier version.
dc.publisherCambridge University Press (CUP)
dc.subjectDefects
dc.subjectGinzburg-Landau
dc.subjectLandau-de Gennes
dc.titleThe radial-hedgehog solution in Landau–de Gennes' theory for nematic liquid crystals
dc.typeArticle
dc.identifier.journalEuropean Journal of Applied Mathematics
dc.contributor.institutionUniversity of Oxford, Oxford, United Kingdom
kaust.grant.numberKUK-C1-013-04


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