Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Self-excited drop oscillations in electrowetting.

Jean-Christophe Baret1, Michel M J Decré, Frieder Mugele

  • 1Philips Research Laboratories Eindhoven, Prof. Holstlaan 4, 5656AA Eindhoven, The Netherlands.

Langmuir : the ACS Journal of Surfaces and Colloids
|April 18, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Electrodewetting of Surfactant-Laden Drops on Silicon Oxide: Molecular Insights from Sum-Frequency Generation Spectroscopy.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Polymer Brush-Enhanced Extraction and Spreading of Oil from Lubricating Greases.

Tribology letters·2026
Same author

Accelerated Dissolution of Olivine Pebbles by Oxalic Acid at Low pH.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Droplet Actuation on Gradient Electrowetting Surface.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Confocal Absorbance-Activated Droplet Sorting (cAADS) for Enzyme Engineering.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

Boosting the Charge Output of Enclosed Liquid-Based Nanogenerators by Electrowetting-Assisted Charge Injection Approach.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025

We discovered that millimeter-sized water drops can oscillate between attached and detached states when subjected to electrowetting. This phenomenon is controlled by wire height and voltage, explained by a capillary model.

Area of Science:

  • Fluid dynamics
  • Soft matter physics
  • Surface science

Background:

  • Electrowetting is a technique used to control surface tension and wetting properties of liquids using electric fields.
  • Sessile drops are liquid drops resting on a solid surface, forming a specific contact angle.
  • Understanding drop dynamics is crucial for applications in microfluidics and lab-on-a-chip devices.

Purpose of the Study:

  • To investigate the oscillatory behavior of aqueous sessile drops under electrowetting.
  • To determine the critical parameters (wire height, voltage) that induce drop oscillations.
  • To develop a predictive model for drop oscillation dynamics.

Main Methods:

  • Experimental setup involving millimeter-sized aqueous drops in oil with a wire-shaped electrode.

Related Experiment Videos

  • Systematic variation of electrode height and applied voltage.
  • High-speed video microscopy for dynamic analysis.
  • Numerical fluid dynamics modeling.

    • Main Results:

    • Periodic oscillations observed between attached and detached drop states within specific parameter ranges.
    • Identification of threshold voltage and wire height for oscillation onset.
    • Validation of a simple capillary model for explaining the observed oscillations.
    • Development of a 1D harmonic oscillator model correlating oscillations with intrinsic and extrinsic parameters.

    Conclusions:

    • Electrowetting can induce stable, periodic oscillations in sessile drops.
    • The oscillation dynamics are governed by a balance of capillary, electrical, and viscous forces.
    • The developed harmonic oscillator model accurately describes the parametric dependence of drop oscillations.