SPP 2171:  Dynamic wetting of flexible, adaptive and switchable surfaces

• Subject Area: Physics ; Construction Engineering and Architecture ; Biology ; Chemistry ; Mechanical and Industrial Engineering ; Materials Science and Engineering ; Mathematics ; Thermal Engineering/Process Engineering
• Term: since 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 402234552

The Priority Program 2171 is developing the basic physical understanding of dynamic wetting processes on flexible, adaptive and switchable surfaces. Beside its mainfocus on the wetting dynamics of simple, low-molecular-weight liquids, also mixtures of simple liquids and diluted suspensions can be considered. Such systems offer novel coupling mechanisms through their internal degrees of freedom and are common in applications. They also occur in biophysical contexts. The priority program establishes the prerequisites for the future control of dynamic wetting processes in a variety of applications.The Coordination Funds shall continue to provide the means for a coherent realisation of the highly cooperative and interdisciplinary priority program. It shall provide means that allow all participants to develop their collaborations and share their results within the SPP and beyond. Main measures include the organisation of the scientific exchange between the individual projects; support of the training of junior researchers through central events, by promoting individual exchanges, and through local training events; further extension of the SPP's structured collection of hands-on tutorials, research data and algorithms that foster interdisciplinary cooperation and lower entry thresholds for junior researchers; organisation of the presentation of the scientific results of the SPP to the international scientific community and the general public; administration of the support for junior researchers within the SPP; and management of measures for family-friendliness and gender equality within the SPP.

• DFG Programme: Priority Programmes
• International Connection: Austria, Netherlands, Switzerland, United Kingdom

Projects

• Adaptive Droplets Transport Through Coupled Flow Paths (Applicant Pfohl, Thomas )
• Colloidal assembly as a tool for adaptive and switchable interfaces (Applicant Harting, Jens )
• Coordination Funds (Applicant Thiele, Uwe )
• Depth-Resolved Analyses of Water Penetration During Dynamic Wetting in Solvatochromic Dye-Gradient Polymer Brushes by Time-Resolved Fluorescence (Applicants Ihmels, Heiko ;  Schönherr, Holger )
• Droplet behaviour on switchable and adaptive soft and hard spiropyran-based materials (Applicant Helmer, Dorothea )
• Dynamic advancing and receding contact angles of adaptive surfaces (Applicant Butt, Hans-Jürgen )
• Dynamic behavior of water droplets on flexible, adaptive and switchable surfaces generated using surface attached polymer networks and brushes (Applicant Rühe, Jürgen )
• Dynamic Electrowetting at Nanoporous Surfaces: Switchable Spreading, Imbibition, and Elastocapillarity (Applicant Huber, Patrick )
• Dynamic wetting and dewetting of viscous liquid droplets/films on viscoelastic substrates (Applicants Seemann, Ralf ;  Wagner, Ph.D., Barbara Agnes )
• Dynamic Wetting of Adaptive and Responsive Polyelectrolyte Substrates: A multiscale approach (Applicant von Klitzing, Regine )
• Dynamic wetting of self-assembled monolayers and polymer brushes functionalized with photoresponsive arylazopyrazoles (Applicant Ravoo, Bart Jan )
• Dynamic wetting on deforming substrates, elastic sheets, and under evaporation: A study with the boundary element method (Applicant Stark, Holger )
• Dynamic wetting phenomena and contact angle hysteresis of drops on polymer brushes and gels (Applicants Schmid, Friederike ;  Vollmer, Doris )
• Dynamic wetting phenomena in lattice models for nematic fluids/liquid crystals near switchable substrate potentials (Applicant Oettel, Martin )
• Dynamics of Liquid-Liquid-Elastic Three Phase Lines (Applicant Karpitschka, Stefan )
• Efficient and accurate numerical simulation of dynamic wetting of flexible structures (Applicant Aland, Sebastian )
• Focusing Effect for Sliding Drops Induced by Adaptive Surfaces (Applicant Berger, Rüdiger )
• Highly accurate numerical simulation of wetting and dewetting on flexible substrates including Heat transfer (Applicant Kummer, Florian )
• Impact of co-nonsolvency effects on dynamic wetting (Applicants Auernhammer, Günter K. ;  Uhlmann, Ph.D., Petra )
• Intrinsic analysis of dynamic wetting on soft surfaces (Applicant Sega, Marcello )
• Liquids on switchable pre-structured substrates - from microscopic to mesoscopic models (Applicants Gurevich, Svetlana ;  Heuer, Andreas )
• Mathematical modeling and simulation of substrate-flow interaction using generalized gradient flows (Applicant Peschka, Dirk )
• Microscopic Mechanisms and Surface Adaptation Effects in Slide-Electrification (Applicants Andrienko, Denis ;  Weber, Stefan )
• Modelling of spreading, imbibition and evaporation of liquids on structured or porous deformable substrates (Applicant Gambaryan-Roisman, Tatiana )
• Structure-Property Relations and Wetting Dynamics of Organic Thin Films with Photo-Switches (Applicant Braunschweig, Björn )
• Substrate and Drop Dynamics During Impact and Coalescence on Soft Adaptive Surfaces (Applicant Harth, Kirsten )
• The molecular scale of switchable wetting (Applicant Backus, Ellen )
• Wetting of bio-inspired, stimulus-responsive polymer surfaces by lipid vesicles (Applicants Müller, Marcus ;  Tanaka, Motomu )
• Wetting of structured surfaces with switchable topography and mechanical properties (Applicant Ionov, Leonid )
• Wetting on Patterned Adaptive Conducting Polymer Surfaces for Microfluidic Applications (PolySurf) (Applicants Ludwigs, Sabine ;  Steeb, Holger )
• Wetting on soft absorbing substrates: experiment, simulation and theory (Applicants de Beer, Sissi ;  Snoeijer, Ph.D., Jacobus ;  Thiele, Uwe )

• Spokesperson: Professor Dr. Uwe Thiele