Fig. 2.

Bulk portion of the free energy. Shown is the contour plot of the presently employed bulk free energy density $\mathcal{V}\left(n_1,n_2\right)$, see Eq. (6), as a function of the concentrations n₁ and n₂ of the components. The two paraboloids correspond with the free energies of the two pure phases, respectively; the paraboloids intersect at the “dividing surface” shown in the plot by the dashed yelow line. The upper-left minimum corresponds to the dimer-rich solution, which is the minority phase. The curve connecting the two minima is the parametric plot of the concentrations n₁ and n₂ from Fig. 1, the parameter being the radial coordinate r