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Université de Fribourg

Density dependent interactions and structure of charged colloidal dispersions in the weak screening regime

Rojas-Ochoa, Luis Fernando ; Castañeda-Priego, R. ; Lobaskin, V. ; Stradner, Anna ; Scheffold, Frank ; Schurtenberger, Peter

In: Physical Review Letters, 2008, vol. 100, p. 178304

We determine the structure of charge-stabilized colloidal suspensions at low ionic strength over an extended range of particle volume fractions using a combination of light and small angle neutron scattering experiments. The variation of the structure factor with concentration is analyzed within a one-component model of a colloidal suspension. We show that the observed structural behavior...