Nematic liquid crystals on spherical surfaces

Control of defect configurations by temperature, density, and rod shape

Subas Dhakal, Francisco Solis, Monica Olvera De La Cruz

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Recent experiments have shown that defect conformations in spherical nematic liquid crystals can be controlled through variations of temperature, shell thickness, and other environmental parameters. These modifications can be understood as a result of the induced changes in the effective elastic constants of the system. To characterize the relation between defect conformations and elastic anisotropy, we carry out Monte Carlo simulations of a nematic on a spherical surface. As the anisotropy is increased, the defects flow from a tetrahedral arrangement to two coalescing pairs and then to a great circle configuration. We also analyze this flow using a variational method based on harmonic configurations.

Original languageEnglish (US)
Article number011709
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume86
Issue number1
DOIs
StatePublished - Jul 23 2012

Fingerprint

control surfaces
Nematic Liquid Crystal
rods
Defects
liquid crystals
Conformation
Configuration
Anisotropy
defects
configurations
Great circle
great circles
elastic anisotropy
anisotropy
Elastic Constants
Variational Methods
coalescing
temperature
Arrangement
Shell

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

Nematic liquid crystals on spherical surfaces : Control of defect configurations by temperature, density, and rod shape. / Dhakal, Subas; Solis, Francisco; Olvera De La Cruz, Monica.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 86, No. 1, 011709, 23.07.2012.

Research output: Contribution to journalArticle

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