Pattern formation in liquid crystals

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

What does viscous fingering have in common with crystal growth? It is not only the visual similarity of the patterns the two seemingly unrelated phenomena can generate under certain circumstances, but also the same underlying physics which controls both growth processes. The common behaviour - diffusion limited growth - leads to morphological instability in which a growing surface is unstable with respect to spacially periodic perturbations. Several theoretical and simulation studies have shown that the simple model is biased in its large scale morphology by the local anisotropy of the growth rules. Liquid crystals exhibit inherent anisotropies tunable with temperature in their bulk properties, which makes them extremely attractive for experimental studies of pattern forming processes. Electrohydrodynamic instabilities, transient patterns at the Frederiksz transition, directional solidification at an isotropic-nematic and cholesteric-smectic A phase transition, viscous fingering and dendritic "smectification" are discussed.

Original languageEnglish
Pages (from-to)114-117
Number of pages4
JournalPhysica Scripta
Volume1989
Issue numberT25
DOIs
Publication statusPublished - Jan 1 1989

Fingerprint

Pattern Formation
Liquid Crystal
liquid crystals
Anisotropy
Electrohydrodynamics
anisotropy
electrohydrodynamics
Crystal Growth
Growth Process
Solidification
Biased
crystal growth
Experimental Study
Phase Transition
Unstable
Physics
Simulation Study
Perturbation
perturbation
physics

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mathematical Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Pattern formation in liquid crystals. / Buka, A.

In: Physica Scripta, Vol. 1989, No. T25, 01.01.1989, p. 114-117.

Research output: Contribution to journalArticle

Buka, A. / Pattern formation in liquid crystals. In: Physica Scripta. 1989 ; Vol. 1989, No. T25. pp. 114-117.
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