Criticality in confined ionic fluids
Flores-Mena, J. E. · Barbosa, Marcia C. · Levin, Yan
Original · EN
A theory of a confined two dimensional electrolyte is presented. The positive and negative ions, interacting by a 1/r potential, are constrained to move on an interface separating two solvents with dielectric constants ε₁ and ε₂. It is shown that the Debye-Hückel type of theory predicts that the this 2d Coulomb fluid should undergo a phase separation into a coexisting liquid (high density) and gas (low density) phases. We argue, however, that the formation of polymer-like chains of alternating positive and negative ions can prevent this phase transition from taking place.
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