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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster I

CPP 15.40: Poster

Montag, 18. März 2024, 18:00–20:00, Poster C

Friction Measurements of Single Pinning Defects Using Droplet Probe Microscopy — •Diego Cortes¹, Michael Kappl¹, Hans-Jürgen Butt¹, and Tomas Corrales² — ¹Max Plank Institute, Mainz, Germany — ²Universidad Tecnica Federico Santa Maria, Valparaiso, Chile

Friction of drops sliding over solid surfaces depends on several effects. By scaling down the size of drops, dissipation at the contact line becomes more and more dominant and can be isolated from other dissipation processes. Here, we measure the energy dissipation of pico liter drops sliding over hydrophobic surfaces using Atomic Force Microscopy. This novel technique allow us to test the wetting behavior of hydrophobic material on sub-micrometer scale.

Keywords: Wetting; Interfaces; Capillarity; AFM; Fluidics