Anomalous deformation of smectic bubbles under DC electric field

Yoko Ishii, Shin Ya Sugisawa, Yuka Tabe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Hemispherical bubbles composed of smectic liquid crystals show an unusual deformation under DC electric field. When the lower voltage than a threshold is applied to the bubble on a substrate, it is elongated in the direction of the electric field and forms a semi-elliptical shape in the equilibrium. With the higher voltage than the threshold, the bubble becomes unstable and sometimes exhibits a periodic oscillation with repeating the elongation and shrinkage. Based on a simple equation of force balance, we analyzed both the static and dynamic deformations under DC field and successfully reproduced the observed behaviour. By the detailed analysis, we also determined the surface tension and the electric conductivity of the smectic bubbles.

Original languageEnglish
Pages (from-to)166-173
Number of pages8
JournalMolecular Crystals and Liquid Crystals
Volume549
DOIs
Publication statusPublished - 2011 Oct 5

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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