Viral nematics in confined geometries

O. V. Manyuhina, K. B. Lawlor, M. C. Marchetti, M. J. Bowick

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Motivated by recent experiments on the rod-like virus bacteriophage fd, confined to circular and annular domains, we present a theoretical study of structural transitions in these geometries. Using the continuum theory of nematic liquid crystals, we examine the competition between bulk elasticity and surface anchoring, mediated by the formation of topological defects. We show analytically that bulk defects are unstable with respect to defects sitting at the boundary. In the case of an annulus, whose topology does not require the presence of topological defects, we find that nematic textures with boundary defects are stable compared to defect-free configurations when the anchoring is weak. Our simple approach, with no fitting parameters, suggests a possible symmetry breaking mechanism responsible for the formation of one-, two- and three-fold textures under annular confinement.

Original languageEnglish (US)
Pages (from-to)6099-6105
Number of pages7
JournalSoft Matter
Volume11
Issue number30
DOIs
StatePublished - Aug 14 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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    Manyuhina, O. V., Lawlor, K. B., Marchetti, M. C., & Bowick, M. J. (2015). Viral nematics in confined geometries. Soft Matter, 11(30), 6099-6105. https://doi.org/10.1039/c5sm00670h