Pattern forming instabilities of the nematic smectic-B interface

T. Tóth-Katona, T. Börzsönyi, A. Buka, R. González-Cinca, L. Ramírez-Piscina, J. Casademunt, A. Hernández-Machado, L. Kramer

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-two-dimensional geometry. Different orientation combinations of the two phases have been achieved experimentally and the interfacial patterns have been studied and analysed as a function of undercooling. The angular dependence of the surface tension has been deduced from the shape of the interface in thermal equilibrium. The experimentally determined surface tension anisotropy has been incorporated into computer simulations based on the phase-field model. The simulations have reproduced qualitatively the rich variety of morphologies (extending from the faceted shape to fully developed dendrites) observed in the experiments for a given set of undercoolings in three geometries. Anisotropic heat diffusion on the nematic side, relevant to our experimental system has also been introduced. Both in the experiments and in the simulations we find that the growth is faster in the lower heat diffusion direction.

Original languageEnglish
Pages (from-to)37-65
Number of pages29
JournalPhysics Reports
Volume337
Issue number1-2
Publication statusPublished - Oct 2000

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supercooling
interfacial tension
heat
dendrites
geometry
simulation
computerized simulation
anisotropy
liquids

Keywords

  • 05.45. - a

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Tóth-Katona, T., Börzsönyi, T., Buka, A., González-Cinca, R., Ramírez-Piscina, L., Casademunt, J., ... Kramer, L. (2000). Pattern forming instabilities of the nematic smectic-B interface. Physics Reports, 337(1-2), 37-65.

Pattern forming instabilities of the nematic smectic-B interface. / Tóth-Katona, T.; Börzsönyi, T.; Buka, A.; González-Cinca, R.; Ramírez-Piscina, L.; Casademunt, J.; Hernández-Machado, A.; Kramer, L.

In: Physics Reports, Vol. 337, No. 1-2, 10.2000, p. 37-65.

Research output: Contribution to journalArticle

Tóth-Katona, T, Börzsönyi, T, Buka, A, González-Cinca, R, Ramírez-Piscina, L, Casademunt, J, Hernández-Machado, A & Kramer, L 2000, 'Pattern forming instabilities of the nematic smectic-B interface', Physics Reports, vol. 337, no. 1-2, pp. 37-65.
Tóth-Katona T, Börzsönyi T, Buka A, González-Cinca R, Ramírez-Piscina L, Casademunt J et al. Pattern forming instabilities of the nematic smectic-B interface. Physics Reports. 2000 Oct;337(1-2):37-65.
Tóth-Katona, T. ; Börzsönyi, T. ; Buka, A. ; González-Cinca, R. ; Ramírez-Piscina, L. ; Casademunt, J. ; Hernández-Machado, A. ; Kramer, L. / Pattern forming instabilities of the nematic smectic-B interface. In: Physics Reports. 2000 ; Vol. 337, No. 1-2. pp. 37-65.
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