Shear-enhanced elasticity in the cubic blue phase I

Oliver Henrich, Shuji Fujii

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Abstract

We present results of the linear and nonlinear rheology of the cubic blue phase I (BPI). The elasticity of BPI is dominated by double-twist cylinders assembled in a body-centered cubic lattice, which can be specified by disclination lines. We find that the elasticity of BPI is enhanced by an order of magnitude by applying pre-shear. The shear-enhanced elasticity is attributed to a rearrangement of the disclination lines that are arrested in a metastable state. Our results are relevant for the understanding of the dynamics of disclinations in the cubic blue phases.
Original languageEnglish
Article number052704
Number of pages11
JournalPhysical Review E
Volume103
Issue number5
DOIs
Publication statusPublished - 18 May 2021

Keywords

  • BPI
  • elasticity
  • cubic blue phase
  • viscoelasticity
  • rheological properties
  • liquid crystal blue phase

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