25-27 April 2018
Institut de mathématique Simion Stoilow de l'Académie Roumaine
Europe/Bucharest timezone

Sur les défauts du type "anneau de Saturne" des cristaux liquides nématiques/On Saturn-ring defects in a nematic liquid crystal

27 Apr 2018, 09:00
1h

Speaker

Lia Bronsard (McMaster University)

Description

We consider energy minimizing configurations of a nematic liquid crystal, as described by the Landau-de Gennes model. We focus on an important model problem concerning a nematic surrounding a spherical colloid particle, with normal anchoring at the surface. For topological reasons, the nematic director must exhibit a defect (singularity), which may take the form of a point or line defect. We consider two physical regimes in which "Saturn-ring" configurations will be energetically favorable: the case of colloids of small radius, and the case of strong applied magnetic fields.

Primary author

Lia Bronsard (McMaster University)

Co-authors

Stan Alama (McMaster University, Canada) Xavier Lamy (U. Paul Sabatier, Toulouse, France)

Presentation Materials