Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Steady, Laminar Flow in Circular Tubes

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...

Steady, Laminar Flow Between Parallel Plates

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.

You might also read

Related Articles

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

Sort by

Same author

Pressure-actuated microfluidic devices for electrophoretic separation of pre-term birth biomarkers.

Analytical and bioanalytical chemistry·2015

Same author

Redox magnetohydrodynamics enhancement of stripping voltammetry of lead(II), cadmium(II) and zinc(II) ions using 1,4-benzoquinone as an alternative pumping species.

The Analyst·2011

Same author

Microfabricated recessed microdisk electrodes: characterization in static and convective solutions.

Analytical chemistry·2011

Same author

Fabrication and characterization of sputtered-carbon microelectrode arrays.

Analytical chemistry·2011

Same author

Effect of laser fluence on laser desorption mass spectra of organothiol self-assembled monolayers on gold.

Journal of the American Chemical Society·2001

Search research articles

Related Experiment Video

Updated: May 5, 2026

Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows

Published on: April 25, 2013

Flat flow profiles achieved with microfluidics generated by redox-magnetohydrodynamics.

V Sahore¹, I Fritsch

¹Department of Chemistry and Biochemistry, University of Arkansas , Fayetteville, Arkansas 72701, United States.

Analytical Chemistry

|November 27, 2013

Summary

Redox-magnetohydrodynamics (MHD) microfluidic pumping achieves uniform horizontal flow profiles for lab-on-a-chip applications. This method enables precise fluid movement without shape distortion, crucial for assays and separations.

More Related Videos

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

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

Published on: January 28, 2022

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Published on: May 30, 2025

Related Experiment Videos

Last Updated: May 5, 2026

Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows

Published on: April 25, 2013

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

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

Published on: January 28, 2022

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Published on: May 30, 2025

Area of Science:

Microfluidics
Biophysics
Electromagnetics

Background:

Uniform fluid flow is essential for microfluidic applications like assays and separations.
Maintaining flow integrity without shape distortion is a key challenge in lab-on-a-chip devices.

Purpose of the Study:

To demonstrate sustained uniform horizontal flow profiles using redox-magnetohydrodynamics (MHD) microfluidic pumping.
To investigate the impact of ionic current density gradients on velocity profiles.

Main Methods:

Utilized redox-MHD principles with a specific electrolyte solution (K3Fe(CN)6, K4Fe(CN)6, KCl).
Generated ionic current density via a constant current applied across gold microband electrodes on a silicon substrate.
Applied a magnetic field using a NdFeB permanent magnet.
Monitored fluid movement by tracking polystyrene beads with video microscopy and analyzed data using particle image velocimetry software.

Main Results:

Achieved horizontal flow profiles with uniform velocities (3-13% RSD) at fixed heights across various channel widths (0.5, 2.0, 5.6 mm).
Sustained these uniform flows along a ~25.0 mm path within a small chip volume.
Observed flow magnitudes up to 124 μm/s.
Investigated the effects of varying electrode configurations and applied currents (118-307 μA).

Conclusions:

Redox-MHD microfluidic pumping is an effective method for generating stable, uniform flow profiles in microfluidic devices.
The technique holds promise for improving the precision and reliability of lab-on-a-chip assays and separations.
Further investigation into current density gradients can optimize flow control.