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Related Experiment Video

Updated: Jul 4, 2026

Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films

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Published on: August 18, 2018

Dynamics of a bouncing droplet onto a vertically vibrated interface.

T Gilet¹, D Terwagne, N Vandewalle

¹GRASP, Physics Department B5a, University of Liège, B-4000 Liège, Belgium. Tristan.Gilet@ulg.ac.be

Physical Review Letters

|June 4, 2008

Summary

Low viscosity silicon oil droplets bounce on a vibrating high viscosity oil bath. Resonance occurs at a specific frequency, minimizing the acceleration threshold for droplet bouncing, matching theoretical models.

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Last Updated: Jul 4, 2026

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High Throughput Analysis of Liquid Droplet Impacts

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Published on: March 6, 2020

Area of Science:

Fluid Dynamics
Nonlinear Dynamics
Surface Science

Background:

Vertical vibration of a fluid interface can induce complex phenomena.
Droplet behavior on vibrating surfaces depends on viscosity and surface tension.
Understanding droplet-interface interactions is crucial for various applications.

Purpose of the Study:

To investigate the bouncing dynamics of low viscosity droplets on a vibrating high viscosity oil bath.
To determine the conditions under which periodic bouncing occurs.
To develop and validate a theoretical model for the bouncing droplet phenomenon.

Main Methods:

Experimental setup with vertically vibrating high viscosity oil bath and low viscosity silicon oil droplets.
Systematic variation of vibration frequency and acceleration.
Theoretical modeling incorporating droplet deformation and air-film lubrication forces.

Main Results:

Droplets exhibit periodic bouncing above a critical acceleration threshold.
The minimum acceleration threshold for bouncing occurs at resonance frequency.
The developed model accurately predicts the threshold values, showing good agreement with experimental data.

Conclusions:

Viscosity contrast significantly influences droplet deformation and bouncing behavior.
Resonance plays a critical role in minimizing the energy required for droplet bouncing.
The theoretical model provides a robust framework for understanding bouncing droplet dynamics.