Self-assembly of fractal liquid crystal colloids.

Autor: Solodkov NV; School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK., Shim JU; School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK., Jones JC; School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK. j.c.jones@leeds.ac.uk.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2019 Jan 14; Vol. 10 (1), pp. 198. Date of Electronic Publication: 2019 Jan 14.
DOI: 10.1038/s41467-018-08210-w
Abstrakt: Nematic liquid crystals are anisotropic fluids that self-assemble into vector fields, which are governed by geometrical and topological laws. Consequently, particulate or droplet inclusions self-assemble in nematic domains through a balance of topological defects. Here, we use double emulsions of water droplets inside radial nematic liquid crystal droplets to form various structures, ranging from linear chains to three-dimensional fractal structures. The system is modeled as a formation of satellite droplets, distributed around a larger, central core droplet and we extend the problem to explain the formation of fractal structures. We show that a distribution of droplet sizes plays a key role in determining the symmetry properties of the resulting geometric structures. The results are relevant to a variety of inclusions, ranging from colloids suspensions to multi-emulsion systems. Such systems have potential applications for novel switchable photonic structures as well as providing wider insights into the packing of self-assembled structures.
Databáze: MEDLINE