Fig. 2: Equilibrium states of multi-core emulsions.
From: The vortex-driven dynamics of droplets within droplets

Equilibrium configurations of a single-core (a), a two-core (b), a three-core (c), a four-core (d), a five-core (e), and a six-core (f) emulsion. Droplet radii are as follows: Ri = 15, RO = 30 (a), Ri = 17, RO = 56 (b–f).