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8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

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Wed 711:<strong>10</strong>-14:00P5.33The renormalized Jellium model of colloidal suspensionswith multivalent counterionsThiago Colla 11 UFRGS, Av Oswaldo Cruz 439, 91760060, Porto Alegre, BrazilAn extension of the renormalized Jellium model which allows to study colloidal suspensions containingtrivalent counterions is proposed. The theory is based on a modified Poisson-Boltzmannequation which incorporates the effects of counterion correlations near the colloidal surfaces usinga new boundary condition. The results are compared with the ones obtained using the traditionalWigner-Seitz (WS) cell approximation also with this new boundary condition. We find thatwhile the thermodynamic functions obtained within the renormalized Jellium model are in a goodagreement with their WS counterpart, the effective charges predicted by the two theories can besignificantly different.33

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