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Article Dans Une Revue Soft Matter Année : 2011

Clustering, conductor-insulator transition and phase separation of an ultrasoft model of electrolytes

Jean-Pierre Hansen
  • Fonction : Auteur
Gerhard Kahl
  • Fonction : Auteur

Résumé

We investigate the clustering and phase separation of a model of ultrasoft, oppositely charged macroions by a combination of Monte Carlo and Molecular Dynamics simulations. Static and dynamic diagnostics, including the dielectric permittivity and the electric conductivity of the model, show that ion pairing induces a sharp conductor-insulator transition at low temperatures and densities, which impacts the separation into dilute and concentrated phases below a critical temperature. Preliminary evidence is presented for a possible tricritical nature of the phase diagram of the model.

Dates et versions

hal-00597995 , version 1 (03-06-2011)

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Daniele Coslovich, Jean-Pierre Hansen, Gerhard Kahl. Clustering, conductor-insulator transition and phase separation of an ultrasoft model of electrolytes. Soft Matter, 2011, 7, pp.1690. ⟨10.1039/c0sm01090a⟩. ⟨hal-00597995⟩
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