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

Uniform Depth Channel Flow: Problem Solving

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...

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.

Concept of Pressure at a Point

Concept of Pressure at a Point

The concept of pressure at a point in a fluid establishes that pressure within a fluid is uniform in all directions at a specific location. This uniformity occurs because fluid molecules exert force evenly across any point due to their random motion and continuous collisions within the fluid. Pressure at a point is determined by the surrounding fluid molecules and is influenced by factors like depth and density, rather than by shape or orientation.
In a fluid at rest, pressure acts equally in...

You might also read

Related Articles

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

Sort by

Same author

<i>Fusobacterium nucleatum-</i>derived succinic acid aggravates colitis by triggering macrophage pro-inflammatory phenotypic transformation via SUCNR1/NF-κB axis.

Gut microbes·2026

Same author

MT-MRI for detection of renal interstitial fibrosis in renovascular disease.

Scientific reports·2026

Same author

A Mobile App (Tpro) for Symptom Management in Patients With Deep Vein Thrombosis Based on Patient-Reported Outcomes: Design and Development Using an Iterative Convergent Mixed Methods Approach.

JMIR human factors·2026

Same author

Responses of aerosol pH to anthropogenic emission changes in northern China: Insights from the 2022 Winter Olympics control.

Journal of environmental sciences (China)·2026

Same author

Measuring the spatial lag effect of Tobler's First Law of Geography in Earth system predictive learning.

Scientific reports·2026

Same author

Hydrogel photopolymerization within microfluidic droplets for single cell encapsulation.

Journal of materials chemistry. B·2026

Search research articles

Related Experiment Video

Updated: Feb 24, 2026

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

Two-phase displacements in microchannels of triangular cross-section.

Yafei Liu¹, Andrew Hansen¹, Erica Block¹

¹Department of Chemical Engineering, University of Wyoming, Laramie, WY 82070, USA.

Journal of Colloid and Interface Science

|August 12, 2017

Summary

Ultrafast laser ablation fabricates triangular microchannels for precise capillary flow control. This method validates predictive theories for capillary pressure in non-planar geometries, advancing microfluidic design.

Keywords:

Capillarity Laser fabrication Microfluidics Multiphase flow

More Related Videos

Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

Published on: October 21, 2013

Reconfigurable Microfluidic Channel with Pin-discretized Sidewalls

Reconfigurable Microfluidic Channel with Pin-discretized Sidewalls

Published on: April 12, 2018

Related Experiment Videos

Last Updated: Feb 24, 2026

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

Published on: October 21, 2013

Reconfigurable Microfluidic Channel with Pin-discretized Sidewalls

Reconfigurable Microfluidic Channel with Pin-discretized Sidewalls

Published on: April 12, 2018

Area of Science:

Microfluidics
Fluid Dynamics
Materials Science

Background:

Microfluidic channel geometry significantly impacts capillary-driven flow.
Current fabrication methods are limited to planar designs, restricting geometric variation.
Depth-dependent variations in channel width are crucial for advanced fluid control.

Purpose of the Study:

To introduce a novel fabrication technique for microchannels with arbitrary triangular cross-sections.
To experimentally investigate two-phase flow and capillary pressures in these triangular channels.
To validate predictive theories for capillary pressure in non-planar microfluidic geometries.

Main Methods:

Fabrication of microchannels with triangular cross-sections using ultrafast laser ablation.
Characterization of channel dimensions (widths 45-116µm, aspect ratios 0.7-1.9).
Experimental observation of two-phase flow and measurement of critical capillary pressures.

Main Results:

Successful fabrication of microchannels with arbitrary triangular cross-sections.
Experimental validation of Mayer, Stowe and Princen (MS-P) theory for capillary pressure prediction in perfectly water-wet triangular channels.
Insights into capillary pressure prediction under intermediate wet conditions.

Conclusions:

Ultrafast laser ablation enables precise fabrication of complex microchannel geometries.
Validated predictive frameworks for capillary pressure in triangular channels advance microfluidic design.
This approach has broad implications for fundamental and applied microfluidic technologies.