Wetting and Superamphiphobicity

Research on the wetting of micro- and nanostructured surfaces is motivated by the challenge to control wetting, in particular to fabricate surfaces which repel liquids. Describing wetting of a liquid on a structured surface is a challenge, because of the wide range of involved length scales. Nano- and micrometer-sized inhomogeneities cause pinning of the three-phase contact line, preventing drops to reach their global equilibrium. We fabricate super liquid-repellent surfaces, analyze the fundamental questions involved in wetting of such surfaces and explore potential applications. In particular, we work on the following topics:

  • Superamphiphobicity -> Hans-Jürgen Butt, Doris Vollmer, Michael Kappl, Werner Steffen
  • Drop adhesion forces -> Rüdiger Berger, Michael Kappl, Doris Vollmer, Hans-Jürgen Butt
  • Adaptive wetting -> Hans-Jürgen Butt, Rüdiger Berger, Kaloian Koynov, Werner Steffen, Doris Vollmer
  • Lubricant impregnated surfaces -> Doris Vollmer
  • Capillary flow -> Doris Vollmer
  • Applications: membrane distillation, easy to clean, anti-icing, bio-fouling, -> Hans-Jürgen Butt, Doris Vollmer, Michael Kappl, Werner Steffen
Dr. Rüdiger Berger
We investigate forces associated with sliding drops and apply advanced scanning force microscopy methods. more
Dr. Michael Kappl
Studying surface interactions and wetting properties at the nano- and microscale, we aim for novel applications such as the production of supraparticles on superamphiphobic surfaces or water desalination by membrane distillation. more
Dr. Kaloian Koynov
Wir entwickeln Fluoreszenzkorrelationsspektroskopie und verwandte Methoden, um Forschungsfragen im Bereich der Polymer-, Kolloid- und Grenzflächenforschung zu beantworten. more
Prof. Dr. Werner Steffen
We develop and study adaptive surfaces and surfaces adapting to external trigger. Our aim is to find mechanical and chemical durable surface repelling fluids as water and blood, as well as to study these interfaces for their physical behavior. more
Apl. Prof. Dr. Doris Vollmer
We design, characterize and model lubricant impregnated and super-liquid repellent surfaces under static and flow conditions. more
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