±1/2 wedge disclinations stabilized by a sinusoidal boundary in a thin hybrid nematic liquid-crystal film

Takuya Ohzono, Junichi Fukuda, Kosuke Suzuki, Tomohiko Yamaguchi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

As an interesting example of how geometry affects the formation of defects, we study the defect structures of a hybrid nematic liquid-crystal film in a wedge-shaped cell made up of sinusoidal microwrinkles and an elastomer sheet. When the cell thickness is larger than a threshold value h c, +1/2 and -1/2 disclinations are simultaneously stabilized along concave grooves and convex crests, respectively. A simple theoretical analysis gives a good estimate of h c. The disclinations also show alternating optical rotations resulting from the curved boundary and liquid-crystal elastic anisotropy.

Original languageEnglish
Article number030701
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume86
Issue number3
DOIs
Publication statusPublished - Sep 28 2012
Externally publishedYes

Fingerprint

Nematic Liquid Crystal
Wedge
wedges
Defects
liquid crystals
Curved Boundary
elastic anisotropy
Elastomers
Cell
defects
elastomers
Threshold Value
grooves
Liquid Crystal
Anisotropy
Theoretical Analysis
thresholds
estimates
geometry
cells

All Science Journal Classification (ASJC) codes

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

Cite this

±1/2 wedge disclinations stabilized by a sinusoidal boundary in a thin hybrid nematic liquid-crystal film. / Ohzono, Takuya; Fukuda, Junichi; Suzuki, Kosuke; Yamaguchi, Tomohiko.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 86, No. 3, 030701, 28.09.2012.

Research output: Contribution to journalArticle

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