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Related Experiment Video

Updated: Nov 9, 2025

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

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

Published on: August 18, 2018

Controlling the breakup of toroidal liquid films on solid surfaces.

Andrew M J Edwards¹, Élfego Ruiz-Gutiérrez^2,3, Michael I Newton¹

¹SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.

Scientific Reports

|April 15, 2021

Summary

Controlling liquid filament wetting on surfaces allows repeatable switching between toroidal films and droplet patterns. Dielectrophoresis forces enable precise control over liquid behavior for applications in printing and microfluidics.

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Last Updated: Nov 9, 2025

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Published on: January 26, 2016

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Published on: May 15, 2017

Area of Science:

Fluid Dynamics
Surface Science
Microfluidics

Background:

Surface tension drives liquid filament breakup, a key problem for droplet generation.
Wetting conditions on solid surfaces complicate fluid dynamics, making instability pathways hard to predict.

Purpose of the Study:

To demonstrate repeatable control over liquid filament breakup using surface wetting.
To investigate the role of dielectrophoresis in mode selection for liquid instabilities.

Main Methods:

Controlled static and dynamic wetting of surfaces.
Application of dielectrophoresis forces to liquid- লiquid interfaces.
Analysis of liquid filament instability pathways and final states.

Main Results:

Achieved repeatable switching between toroidal liquid films and defined droplet patterns.
Demonstrated dielectrophoresis-induced mode selection by altering contact line mobility and wetting.
Identified distinct instability pathways controlled by electrical polarization.

Conclusions:

Surface wetting and dielectrophoresis offer precise control over liquid filament stability.
Insights into wetting and stability of shaped liquid filaments are relevant for printing and microfluidic devices.