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Berlin 2018 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 79: Wetting, Microfluidics and Confined Liquids II

CPP 79.6: Talk

Friday, March 16, 2018, 10:45–11:00, PC 203

Electrolyte solutions confined by non-uniform walls — •Maximilian Mußotter and Markus Bier — Max-Planck Institut für Intelligente Systeme und Universität Stuttgart, 70569 Stuttgart, Germany

In contrast to fluids comprising electrically neutral constituents and uncharged walls, the widely used assumption of substrates with uniform wall-fluid interactions is questionable beyond molecular length scales in the context of charged substrates and dilute electrolyte solutions, where the influence of non-uniformities can be on the scale of the Debye length. For this reason the goal of this work was to deepen understanding of electrolyte solutions in contact with non-uniformly charged substrates. The system is studied by means of classical density functional theory, within the framework of square-gradient and double-parabola approximation. This work is intended to lay the foundations for future studies of fluids confined by non-uniform boundaries.

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