Simulation of a cholesteric blue phase in a thin cell: Exotic defect structures and their response to an electric field

Junichi Fukuda, Slobodan Žumer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We present our numerical attempts to simulate the structures of a cholesteric blue phase (BP) confined in a thin cell. Our simulations are based on a Landau-de Gennes theory describing the orientational order of the liquid crystal by a second-rank symmetric tensor. When the cell thickness is small enough, of the order of the lattice constant of the bulk BP a, various exotic defect structures that do not resemble those of bulk BPs are shown to be stable. They include a hexagonal lattice of Skyrmion excitations, and arrays of disclination lines in a double-helix form. We also show the dynamics of disclination lines in a thicker cell (∼ 2.6 a) under an applied electric field. The cell before the application of an electric field accommodates disclination lines of the form similar to that of bulk BP. The electric field alters their form in a non-trivial way depending on the field strength.

Original languageEnglish
Title of host publicationEmerging Liquid Crystal Technologies VII
Volume8279
DOIs
Publication statusPublished - Mar 2 2012
Externally publishedYes
EventEmerging Liquid Crystal Technologies VII - San Francisco, CA, United States
Duration: Jan 22 2012Jan 25 2012

Other

OtherEmerging Liquid Crystal Technologies VII
CountryUnited States
CitySan Francisco, CA
Period1/22/121/25/12

Fingerprint

Defect structures
Electric Field
Defects
Electric fields
electric fields
Cell
defects
cells
Line
Liquid Crystals
Simulation
simulation
Hexagonal Lattice
helices
Liquid crystals
Lattice constants
Tensors
field strength
Helix
liquid crystals

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Simulation of a cholesteric blue phase in a thin cell : Exotic defect structures and their response to an electric field. / Fukuda, Junichi; Žumer, Slobodan.

Emerging Liquid Crystal Technologies VII. Vol. 8279 2012. 82790V.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fukuda, J & Žumer, S 2012, Simulation of a cholesteric blue phase in a thin cell: Exotic defect structures and their response to an electric field. in Emerging Liquid Crystal Technologies VII. vol. 8279, 82790V, Emerging Liquid Crystal Technologies VII, San Francisco, CA, United States, 1/22/12. https://doi.org/10.1117/12.912825
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