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

Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

2.4K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.4K
Permeability of Concrete01:25

Permeability of Concrete

233
Permeability in the context of concrete refers to how easily liquids or gases can pass through the material. This quality is crucial for assessing the water-tightness and durability of concrete structures and their resistance to chemical attacks. Concrete permeability can be determined through comparative laboratory tests. These tests typically involve sealing a concrete specimen from the sides, applying water pressure to the top surface with pressure, and measuring the amount of water passing...
233
Pore Size Distribution01:23

Pore Size Distribution

228
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
228
Polymers: Molecular Weight Distribution01:10

Polymers: Molecular Weight Distribution

4.0K
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
4.0K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

46.6K
Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
46.6K
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry01:20

Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

283
Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
283

You might also read

Related Articles

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

Sort by
Same author

Foam coarsening in granular packings.

Physical review. E·2026
Same author

Breakdown of classical models in highly damped ultrasonic propagation.

The Journal of the Acoustical Society of America·2025
Same author

Fluctuations of local plastic strain in granular media.

The European physical journal. E, Soft matter·2025
Same author

Development of a questionnaire to screen for chronic obstructive respiratory diseases in low- and middle-income countries.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease·2025
Same author

Evidence for a sub-Jovian planet in the young TWA 7 disk.

Nature·2025
Same author

Validation of a questionnaire to screen chronic obstructive respiratory diseases.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease·2025
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Oct 2, 2025

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
09:27

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

Published on: August 16, 2012

10.9K

Permeability of polydisperse solid foams.

V Langlois1, C T Nguyen2, F Detrez2

  • 1Navier, Univ Gustave Eiffel, Ecole des Ponts, CNRS, F-77454 Marne-la-VallĂ©e, France.

Physical Review. E
|February 23, 2022
PubMed
Summary
This summary is machine-generated.

Foam permeability significantly increases with polydispersity, especially in uniform window aperture ratio foams. This study explores numerical simulations to understand foam structure and fluid flow dynamics.

More Related Videos

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
09:22

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity

Published on: December 11, 2014

14.7K
Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

10.6K

Related Experiment Videos

Last Updated: Oct 2, 2025

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
09:27

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

Published on: August 16, 2012

10.9K
Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
09:22

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity

Published on: December 11, 2014

14.7K
Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

10.6K

Area of Science:

  • Materials Science
  • Fluid Dynamics
  • Computational Physics

Background:

  • Foam structures are crucial in various applications, influencing fluid flow and material properties.
  • Understanding the impact of structural variations like polydispersity on foam permeability is essential for material design.

Purpose of the Study:

  • To investigate the effect of polydispersity on foam permeability using numerical simulations.
  • To analyze how different window aperture configurations influence fluid flow in foams.

Main Methods:

  • Foam structures generated using Laguerre tessellations (Neper) and relaxed via Surface Evolver.
  • Pore-network simulations employed to calculate fluid flow and permeability.
  • Analysis of open-cell foams and foams with closed windows, varying aperture configurations.

Main Results:

  • Foam permeability strongly increases with polydispersity degree for foams with uniform window aperture ratios at constant mean pore size.
  • The mean pressure field assumption is valid for estimating foam permeability when window aperture ratio fluctuations are low.
  • Small pores have a minimal effect on permeability due to their low contribution to the fluid volume fraction.

Conclusions:

  • Polydispersity is a key factor significantly enhancing foam permeability.
  • The mean pressure field hypothesis offers a reliable method for permeability estimation under specific conditions.
  • New estimations for equivalent Kelvin foam size based on pore-size distribution are proposed.