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Updated: Aug 11, 2026
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Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
Published on: November 14, 2025
Interface-dominated sliding compound drops
Dominik Thy1, Jan Diekmann2, Uwe Thiele1,3
1Institute of Theoretical Physics, University of Münster, Wilhelm-Klemm-Str. 9, 48149, Münster, Germany.
The European Physical Journal. E, Soft Matter
|August 10, 2026
Summary
This study explores how two immiscible liquids slide on a surface. Researchers identified different drop shapes and behaviors, including time-periodic fusion, overtaking, and splitting, crucial for understanding fluid dynamics.
Area of Science:
- Fluid Dynamics
- Soft Matter Physics
- Interfacial Science
Background:
- Understanding the behavior of multi-component liquid systems is essential in various scientific and industrial applications.
- Sliding drops on surfaces present complex phenomena influenced by interfacial tension, viscosity, and substrate interactions.
- Previous studies often focused on single-component drops or simplified models, leaving the dynamics of compound drops less explored.
Purpose of the Study:
- To investigate the sliding dynamics of compound drops composed of two immiscible liquids on a solid substrate.
- To identify and characterize different drop configurations, including stationary and time-periodic behaviors.
- To analyze the influence of various parameters such as driving force, liquid properties, and volume ratios on drop dynamics.
Main Methods:
- Utilized a mesoscopic hydrodynamic two-layer model in full-curvature formulation.
- Conducted a parameter study to explore transitions between different drop configurations and bifurcation structures.
- Analyzed drop velocities, dynamic Young and Neumann angles, and lateral dissipation profiles.
Main Results:
- Identified distinct drop configurations and transitions between them, including stationary sliding and time-periodic behaviors.
- Established the dependence of drop velocities and dynamic angles on the driving force and liquid properties.
- Observed time-periodic fusion-overtaking-splitting behavior outside the range of stationary sliding solutions.
Conclusions:
- The study provides a comprehensive understanding of the complex dynamics of sliding compound drops.
- The findings reveal critical insights into the bifurcation structure governing drop configurations and transitions.
- The observed time-periodic phenomena offer new perspectives on droplet interactions and transformations in fluid systems.
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