Berlin 2024 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Focus Session: Wetting on Adaptive Substrates III (joint session CPP/DY/O)

CPP 50.7: Talk

Friday, March 22, 2024, 11:45–12:00, H 0110

Dynamics of Moving Droplets on Lubricated Polymer Brushes — •Rodrique Badr¹, Lukas Hauer^2,3, Doris Vollmer³, and Friederike Schmid¹ — ¹Johannes Gutenberg University, Mainz — ²Humboldt-Universität zu Berlin, Berlin — ³Max Planck Institute for Polymer Research, Mainz

The interaction of liquid droplets with lubricated substrates is rich with interesting physics combining thermodynamics, polymer science, and fluid dynamics, and has the potential for various industrial applications. In this work we focus on the dynamics of droplets moving on lubricated polymer brushes. In previous work, we showed the existence of a cloaking transition where the lubricant covers the surface of the droplet at equilibrium. Here, we investigate the influence of this cloak on the dynamics, in addition to its properties during the dynamical steady state. In addition, we investigate the characteristic of the wetting ridge, as well as the flow of the droplet, and quantify the friction forces felt by the droplet during its motion.

Keywords: wetting; polymer brush; lubricated substrates; wetting dynamics