A small-angle X-ray scattering study of nanoparticle assembly in an aligned nematic liquid crystal

James E Hallett, Dominic W Hayward, Paul Bartlett, Robert M Richardson

Research output: Contribution to journalArticle (Academic Journal)

3 Citations (Scopus)

Abstract

The assembly of colloidal particles in a nematic liquid crystal has been investigated using small-angle X-ray scattering. The structure and orientation of nanoparticle assemblies in bulk samples of aligned nematic liquid crystal have been determined. The method offers some advantages over optical microscopy, which is usually restricted to investigations of thin cells and micron-sized particles. The scattering from chains of particles has been calculated, and comparison with experimental results has shown that suspensions of 48 and 105 nm diameter silica nanoparticles formed highly ordered structures perpendicular to the liquid crystal director, consistent with quadrupolar defect-induced assembly.
Original languageEnglish
Pages (from-to)1791-1802
Number of pages12
JournalLiquid Crystals
Volume41
Issue number12
Early online date27 Aug 2014
DOIs
Publication statusPublished - 2 Dec 2014

Keywords

  • small-angle X-ray scattering
  • alignment
  • defects
  • liquid crystal
  • nanoparticles

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