The aim of my thesis was optimization of the apparatus for the preparation of a homogeneous active nematic oil-in-water emulsion with the possibility of manipulating the droplet size in micro dimensions and then to study the interaction between neighbouring active nematic shells when a small number of oil droplets is dispersed in the active gel and placed in a confined volume. We used a droplet-generating coflowing device, based on the combination of tapered glass capillaries with circular and square cross section through which different fluids were pushed using nanofluidic pumps. We expected that, under confinement, the normally independent cortical flows in separate droplets experience a hydrodynamical coupling that may lead to interesting synchronization phenomena, which may be relevant to the understanding of the organization of multicellular structures.
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