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

Auteur(s): Coslovich D.(Corresp.), Hansen Jean-Pierre, Kahl Gerhard

(Article) Publié: Soft Matter, vol. 7 p.1690 (2011)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-00597995_v1
DOI: 10.1039/c0sm01090a
WoS: 000287588800022
Exporter : BibTex | endNote
21 Citations

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.