Dynamics of a Liquid Crystal close to the Fréedericksz transition - ENS de Lyon - École normale supérieure de Lyon Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2013

Dynamics of a Liquid Crystal close to the Fréedericksz transition

Résumé

We report experimental and numerical evidences that the dynamics of the director of a liquid crystal driven by an electric field close to the critical point of the Fréedericksz Transition(FT) is not described by a Landau-Ginzburg (LG) equation as it is usually done in literature. The reasons are related to the very crude approximations done to obtain this equation, to the finite value of the anchoring energy and to small asymmetries on boundary conditions. We also discuss the difference between the use of LG equation for the statics and the dynamics. These results are useful in all cases where FT is used as an example for other orientational transitions.
Fichier principal
Vignette du fichier
LC_dynamics_12.pdf (1.26 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

ensl-00853039 , version 1 (21-08-2013)
ensl-00853039 , version 2 (22-08-2013)
ensl-00853039 , version 3 (22-11-2013)

Identifiants

Citer

Aude Caussarieu, Artyom Petrosyan, Sergio Ciliberto. Dynamics of a Liquid Crystal close to the Fréedericksz transition. 2013. ⟨ensl-00853039v2⟩
127 Consultations
357 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More