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Phase field simulations and experiments of faceted growth in liquid crystals
González Cinca, Ricardo; Ramírez de la Piscina Millán, Laureano; Casademunt, Jaume; Hernández-Machado, Aurora; Kramer, L.; Tóth Katona, T.; Börzsönyi, T.; Buka, A.
Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l´Equilibri
We present numerical simulations directed at the description of smectic-B germs growing into the supercooled nematic phase for two different liquid crystalline substances. The simulations are done by means of a phase-field model appropriate to study strong anisotropy and also faceted interfaces. The most important ingredient is the angle-dependent surface energy, but kinetic effects are also relevant. The simulations reproduce qualitatively a rich variety of morphologies observed in the experiments for different value of undercooling, extending from the faceted equilibrium shape to fully developed dendrites.
Peer Reviewed
Àrees temàtiques de la UPC::Física::Física de l'estat sòlid::Cristalls
Crystallography
Simulation methods
Liquid crystals
Facets
Dendrites
Phase field models
Solidification
Digital simulation
Cristal·lografia
Simulació, Mètodes de
info:eu-repo/semantics/publishedVersion
Article
Elsevier Science
         

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