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 Concept Videos

Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
Forced Oscillations01:06

Forced Oscillations

When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...

You might also read

Related Articles

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

Sort by
Same author

In-Situ Characterization of Cathode Catalyst Degradation in PEM Fuel Cells.

Scientific data·2024
Same author

Learning heterogeneous reaction kinetics from X-ray videos pixel by pixel.

Nature·2023
Same author

Learning the Physics of Pattern Formation from Images.

Physical review letters·2020
Same author

Clusters of circulating tumor cells traverse capillary-sized vessels.

Proceedings of the National Academy of Sciences of the United States of America·2016
Same author

Oscillations and Multiple Equilibria in Microvascular Blood Flow.

Bulletin of mathematical biology·2015
Same author

Observations of spontaneous oscillations in simple two-fluid networks.

Physical review. E, Statistical, nonlinear, and soft matter physics·2015

Related Experiment Video

Updated: Jul 11, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
08:32

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Published on: January 28, 2022

Electrohydrodynamic instabilities in microchannels with time periodic forcing.

David A Boy1, Brian D Storey

  • 1Franklin W. Olin College of Engineering, Needham, Massachusetts 02492, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 13, 2007
PubMed
Summary
This summary is machine-generated.

Modulating electric fields in microfluidics does not enhance fluid mixing. Time-periodic electric fields were explored for electrohydrodynamic instabilities, finding no improvement over diffusion.

More Related Videos

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Related Experiment Videos

Last Updated: Jul 11, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
08:32

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Published on: January 28, 2022

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Area of Science:

  • Fluid dynamics
  • Electrokinetics
  • Microfluidics

Background:

  • Spatial gradients in electrical conductivity create instabilities in microfluidic flows under electric fields.
  • These electrohydrodynamic instabilities can induce nonlinear flow at low Reynolds numbers, offering potential for fluid mixing.
  • The study investigates the impact of time-periodic electric fields on these instabilities.

Purpose of the Study:

  • To explore the effect of time-periodic electric fields on electrohydrodynamic instabilities in microfluidic applications.
  • To determine if modulating electric fields can improve fluid mixing across a diffuse interface.

Main Methods:

  • Applied a time-periodic electric field across a diffuse interface of two fluids with varying electrical conductivity.
  • Analyzed the instability dynamics and growth rates under different electric field frequencies.

Main Results:

  • Frequency-dependent behavior was observed only in regimes with very slow instability growth rates.
  • These slow growth rates were insufficient to overcome mixing driven by molecular diffusion.
  • Modulating the electric body force did not prove to be a viable strategy for improving mixing in this specific geometry.

Conclusions:

  • Time-periodic electric fields do not enhance fluid mixing in microfluidic systems with diffuse interfaces.
  • The investigated electrohydrodynamic instabilities are not effectively controlled by electric field modulation for mixing purposes.
  • Molecular diffusion remains the dominant mixing mechanism under the studied conditions.