Equilibrium sedimentation profiles of charged colloidal suspensions |
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| Authors: | G. Téllez T. Biben |
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| Affiliation: | (1) Laboratoire de Physique (Unité Mixte de Recherche du Centre National de la Recherche Scientifique - UMR 5672), Ecole Normale Supérieure de Lyon, 69364 Lyon cedex 07, France, FR |
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| Abstract: | We investigate the sedimentation equilibrium of a charge-stabilized colloidal suspension in the regime of low ionic strength. We analyze the asymptotic behaviour of the density profiles on the basis of a simple Poisson-Boltzmann theory and show that the effective mass we can deduce from the barometric law corresponds to the actual mass of the colloidal particles, contrary to previous studies. Received 5 May 1999 and Received in final form 25 August 1999 |
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