Defect modeling in spreading nematic droplets

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Experiments by Poulard and Cazabat on spreading droplets of nematic liquid crystal (NLC) reveal a surprisingly rich variety of behavior, including at least two different emerging length scales resulting from a contact line instability. In earlier work [Cummings, Lin, and Kondic, Phys. FluidsPHFLE61070-663110.1063/ 1.3570863 23, 043102 (2011)] we modified a lubrication model for NLCs due to Ben Amar and Cummings and showed that, in a qualitative sense, it can account for two-dimensional (2D) versions of the observed behavior. In the present work we propose a different approach that allows us to explore the effect of anchoring variations on the substrate, again in a 2D geometry. This in turn gives a simple way to model the presence of defects, which are nearly always present in such flows. The present model leads to additional terms in the governing equation. We explore the influence of these additional terms for some simple flow scenarios to gain insight into their influence.

Original languageEnglish (US)
Article number012702
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume85
Issue number1
DOIs
StatePublished - Jan 13 2012

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Defect modeling in spreading nematic droplets'. Together they form a unique fingerprint.

Cite this