SPP 2171 Workshop: "Wetting of Flexible, Adaptive, and Switchable Substrates"

There has been a substantial increase in the number of publications in the field of wetting and spreading since 2010 [1]. This increase in the rate of publications can be attributed to the broader application of wetting phenomena in new areas.
The current state of the art in the field of wetting and spreading will be presented. Selected topics in the field are as follows: (i) Contact angle...

Floating objects that releases volatile surface active material shows self-propulsion by generating the Marangon flow around the object. Typical example is a camphor particle on a water surface, which shows self-propulsion by the spontaneous fore-aft and/or rotational symmetry breaking around the particle. Interestingly, such surface active material also induces effective interaction between...

Biological cells are dynamic systems that undergo complex transformations (e.g., division, growth, and translocation) in the absence of external control. Neutrophils of the immune system are a prime example of such complex, cell-autonomous locomotion. These cells exhibit directed motion as they sense and move towards bacteria while navigating a forest of red blood cells. An artificial system...

Surfactants are very familiar molecules. They exist in nature and are widely used in industry as well as in our daily lives. We know that they accumulate at interfaces, that they modify interfacial energy, that they can self-assemble and that they can interact via electrostatic or hydrophobic interactions. Extremely familiar and well characterized, in this talk I would like to how also...

he deformation of soft and flexible objects is a common elastohydrodynamic scenario. In this presentation, we consider deformable surfaces and flexible fibers subjected to hydrodynamic and capillary stresses, and the resulting dynamical approaches to equilibrium. First, we consider a rigid object approaching a poroelastic material in a viscous fluid, for which hydrodynamic stresses arise in...

Ternary fluid systems often require an extra layer of complexity in describing the surface morphologies and interfacial flows. On the other hand, the physics and dynamics of such systems are of special interests for a variety of practical applications, ranging from microfluidics to oil recovery, combustion engines and lubricated surfaces. In this talk I will discuss our numerical and...