Hot Article: Heterogeneity of the electrostatic repulsion between colloids at the oil–water interface

Electrostatic interactions are a common and important form of interaction in soft matter. In this paper Bum Jun Park, Jan Vermant and Eric M. Furst measure the interactions between colloids at a decane-water interface using optical tweezers. The team also used Monte Carlo simulations to understand the effect of heterogeneity on the equilibrium suspension structure.

Graphical abstract: Heterogeneity of the electrostatic repulsion between colloids at the oil–water interfaceThe electrostatic repulsive force has the expected dependence on particle separation for a dipole–dipole interaction but exhibits a distribution of magnitudes in which the force depends on the particle pairs tested and sample preparation method.

Read the full article here: Bum Jun Park, Jan Vermant and Eric M. Furst, Soft Matter, 2010, DOI:10.1039/C0SM00485E

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