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Related Experiment Video

Updated: May 11, 2026

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

Liquid drops impacting superamphiphobic coatings.

Xu Deng¹, Frank Schellenberger, Periklis Papadopoulos

¹Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.

Langmuir : the ACS Journal of Surfaces and Colloids

|May 24, 2013

Summary

Liquid drops impacting superamphiphobic coatings rebound or partially pin depending on velocity. Impalement dynamics, influenced by depinning, dictate whether drops fully rebound or leave residual liquid on the surface.

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Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

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Last Updated: May 11, 2026

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Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Area of Science:

Surface Science
Fluid Dynamics
Materials Science

Background:

Superamphiphobic coatings repel both water and oils.
These coatings often feature fractal-like hydrophobized silica networks.
Understanding liquid drop interactions is crucial for applications.

Purpose of the Study:

Investigate liquid drop dynamics on superamphiphobic surfaces.
Analyze the influence of interfacial tension and viscosity.
Determine factors governing spreading and retraction.

Main Methods:

High-speed video microscopy to observe drop impact.
Utilized ethanol-water and glycerin-water mixtures.
Analyzed drop spreading, contact time, and retraction phases.

Main Results:

Drop spreading is primarily inertia-dominated.
At low velocities, drops rebound; higher velocities increase contact time and decrease restitution.
Temporary impalement occurs, influenced by depinning, with partial pinning at higher velocities.

Conclusions:

Drop impalement depth increases with impact velocity.
Impalement is confined to the initial impact zone.
Partial pinning prevents complete drop removal during retraction.