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

Capillarity in Fluid01:19

Capillarity in Fluid

1.6K
Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
1.6K
Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

3.1K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
3.1K
Capillaries and Their Types01:20

Capillaries and Their Types

9.1K
Capillaries, a crucial constituent of the circulatory system, are diminutive vessels with a diameter between 5–10 micrometers, accommodating perfusion to the tissues through the phenomenon known as microcirculation. Through their permeable walls, consisting of an endothelial layer ensconced by a basement membrane and sporadically dispersed smooth muscle fibers, the exchange of substances between the blood and the interstitial fluid becomes plausible. Variance in wall composition exists,...
9.1K
Capillary Exchange01:28

Capillary Exchange

12.2K
The cardiovascular system's chief role is to disseminate gases, nutrients, waste, and other substances to the body's cells. Small molecules like gases, lipids, and lipid-soluble substances directly diffuse through capillary wall endothelial cell membranes. Glucose, amino acids, and ions, including sodium, potassium, calcium, and chloride, use transporters for facilitated diffusion via membrane-specific channels. Glucose, ions, and bigger molecules may also pass through intercellular...
12.2K
Capillary Beds01:20

Capillary Beds

6.5K
Capillary beds are networks of tiny blood vessels that play a crucial role in the circulatory system. These beds are where the exchange of gases, nutrients, and waste products occurs between the blood and surrounding tissues. Each capillary bed consists of numerous capillaries, which are the smallest blood vessels in the body, typically only one cell-thick. This thinness allows for the efficient diffusion of substances.
Capillaries connect arterioles, small branches of arteries, to venules,...
6.5K
Applications of Integration to Find Blood Flow01:27

Applications of Integration to Find Blood Flow

197
Blood flow through a cylindrical blood vessel can be mathematically described using the principles of laminar flow, a regime in which fluid moves smoothly in parallel layers. In this model, the velocity of the blood is not uniform across the cross-section of the vessel; rather, it varies with the radial distance from the center. The maximum velocity occurs along the central axis, decreasing progressively toward the vessel walls, where it reaches zero due to viscous drag.Approximating Blood...
197

You might also read

Related Articles

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

Sort by
Same author

Radially Aligned Microchannels in a Hemostatic Sponge: Orchestrating Directional Transport, Active Sieving, and Coagulation.

Advanced healthcare materials·2026
Same author

An audio encryption method based on quaternary logic operations.

Scientific reports·2026
Same author

A multi-stage coupling analysis and design optimization method for quality characteristics.

Scientific reports·2026
Same author

A dual-type I/II photosensitizer targeting the plasma membrane for photodynamic therapy.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

Knitted Pneumatic Fabrics for Dynamic Pressure Modulation in Personalized Healthcare Wearables.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Trends in healthy working life expectancy and its difference by workload group among aged over 50 years: a longitudinal perspective.

Scandinavian journal of work, environment & health·2026
Same journal

Immobilization of Ytterbium via Polyphenol Chemistry on Implant Materials for Enhanced Cytocompatibility and Antibacterial Properties.

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

Electrochemical Oxidation Strategy for Integrated CO<sub>2</sub> Capture and Conversion.

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

Probing Molecular Structural Changes of Buried Interfaces between Polyethylene and Nylon in Polymer Thin Films after Stretching.

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

Charge Dependence of Local Hydration Dynamics in Poly(Acrylic Acid) Solutions.

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

Amphiphilic Lubricants Linked by Hydrogen Bonds Achieve Superlubricity and Enhance Water/Oil Tribological Properties.

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

Spin Dewetting of Ultrathin Polymer Films.

Langmuir : the ACS journal of surfaces and colloids·2026
See all related articles

Related Experiment Video

Updated: Apr 30, 2026

Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry
11:20

Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry

Published on: January 9, 2014

8.4K

Geometry-induced asymmetric capillary flow.

Dahua Shou1, Lin Ye, Jintu Fan

  • 1Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney , NSW 2006, Australia.

Langmuir : the ACS Journal of Surfaces and Colloids
|April 26, 2014
PubMed
Summary
This summary is machine-generated.

Capillary flow in porous media is altered by varying layer dimensions. Liquids flow faster through systems with decreasing width gradients, enabling optimized fluid transport.

More Related Videos

Microfluidic Model to Mimic Initial Event of Neovascularization
10:01

Microfluidic Model to Mimic Initial Event of Neovascularization

Published on: April 10, 2021

4.1K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

9.8K

Related Experiment Videos

Last Updated: Apr 30, 2026

Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry
11:20

Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry

Published on: January 9, 2014

8.4K
Microfluidic Model to Mimic Initial Event of Neovascularization
10:01

Microfluidic Model to Mimic Initial Event of Neovascularization

Published on: April 10, 2021

4.1K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

9.8K

Area of Science:

  • Physics of Fluids
  • Porous Media Science
  • Fluid Dynamics

Background:

  • Capillary flow in uniform porous media follows a diffusive-like response, with penetration depth proportional to the square root of time.
  • Non-uniform porous systems introduce complexities that deviate from standard diffusive models.
  • Directionality of flow can be influenced by geometric gradients within porous structures.

Purpose of the Study:

  • To investigate how variations in width and height of multi-section porous layers affect capillary flow dynamics.
  • To compare the flow behavior in porous systems with positive and negative gradients of cross-sectional widths.
  • To identify optimal geometric parameters for enhancing capillary flow speed.

Main Methods:

  • Development of a theoretical model to simulate capillary flow in multi-section porous layers.
  • Conducting experimental studies using controlled porous layer geometries.
  • Quantitative analysis of the effects of local layer width and height on flow time.

Main Results:

  • Capillary flow in non-uniform porous layers deviates significantly from the square root of time diffusive model.
  • Flow time is reduced in systems with a negative gradient of cross-sectional widths compared to positive gradients.
  • Directionality of liquid passage through porous systems is confirmed, with preferential flow in one direction.

Conclusions:

  • Geometric gradients, specifically cross-sectional width variations, critically influence capillary flow rates in porous media.
  • Negative width gradients facilitate faster liquid transport than positive gradients for a given total layer height.
  • The study provides a quantitative understanding and identifies optimal parameters for designing porous systems with enhanced capillary flow.