Fig. 1: Equilibrium structures of passive double emulsions with homeotropic anchoring.
From: Topology controls flow patterns in active double emulsions
a Single-core double emulsion. b Two-core double emulsion. Headless vectors represent the director field. The disclination line (see “Methods” section) has been coloured accordingly to \(\cos \beta={{{\mathbf{\Omega }}}}\cdot {{{\bf{T}}}}\), where Ω is the rotation vector and T the disclination line tangent (c). This allows for the identification of different local director profiles, such as twist-type (\(\cos \beta=0\)), +1/2 comet-shaped (\(\cos \beta=1\)) and − 1/2 trefoil-shaped (\(\cos \beta=-1\)).
