Dynamic wetting

The spreading of a liquid on a solid surface is not only of fundamental interest. It is also relevant in many applications such as coating, printing, and nanotechnology. We study the influence of hydrodynamic boundary conditions (slip vs. no slip) or mechanical deformation of soft surfaces on the dynamics of wetting.
In the case of adaptive surfaces, dynamics of macroscopic wetting can be used to probe time and length scales of the molecular processes involved.
Another common but poorly understood phenomenon we study is charge separation at interfaces due to sliding or bouncing of droplets.

  • Charging of interfaces by liquids -> Stefan Weber, Michael Kappl, Hans-Jürgen Butt
  • Boundary Slip -> Kaloian Koynov
  • 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
We investigate forces associated with sliding drops and apply advanced scanning force microscopy methods. more
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
We develop fluorescence correlation spectroscopy and related methods to address research questions in the field of polymer, colloid and interface science. more
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
We design, characterize and model lubricant impregnated and super-liquid repellent surfaces under static and flow conditions. more
Go to Editor View