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

Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Diffusion01:12

Diffusion

Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
Diffusion on Chromatography Columns01:07

Diffusion on Chromatography Columns

In column chromatography, when an analyte is introduced as a narrow band at the top of the column, the solutes begin to separate and broaden, developing a Gaussian profile. This broadening occurs due to various factors, such as longitudinal diffusion.
Longitudinal diffusion occurs when the solute molecules in the mobile phase diffuse from the more concentrated center of the chromatographic band to the more dilute regions on either side, both towards and against the flow direction. This...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...

You might also read

Related Articles

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

Sort by
Same author

Synthesis and design of double-hydrophilic copolymers for dextran/PEO water-in-water emulsion stabilization.

Carbohydrate polymers·2025
Same author

Gelation of κ-carrageenan in water-in-water emulsions.

Carbohydrate polymers·2025
Same author

Spontaneous formation of protein microcapsules using water-in-water emulsions stabilized by protein microgels.

Journal of colloid and interface science·2025
Same author

Structure and mechanical properties of acetylated κ-carrageenan gels.

International journal of biological macromolecules·2025
Same author

Structure and stabilization of water-in-water emulsions in the presence of two types of microgels.

Journal of colloid and interface science·2024
Same author

Stabilizing Effect of PS-<i>b</i>-PMMA Diblock Copolymers in PS/PMMA-Based THF-in-THF Emulsions.

Langmuir : the ACS journal of surfaces and colloids·2024
Same journal

Donor-Acceptor Separation Augments Temperature Dependence of Kinetic Isotope Effects in NADH Model Hydride Transfer Reactions: Mimicking Enzyme versus Mutant Dynamics.

The journal of physical chemistry. B·2026
Same journal

Disordered Worm-Like Clusters in a Hexagonal Mesophase Former: Simulation and Thermodynamic Description.

The journal of physical chemistry. B·2026
Same journal

Comparative Biophysical Analysis of Healthy and Inflamed Intestinal Membrane Models Using Langmuir Monolayers.

The journal of physical chemistry. B·2026
Same journal

Phosphoserine Charge State Drives Ion Condensation and Spatial Polyamine Presentation in Multirepeat Silaffin.

The journal of physical chemistry. B·2026
Same journal

pH-Dependent Conformational Transition of the Glutamate-GABA Antiporter GadC Revealed by <sup>19</sup>F NMR.

The journal of physical chemistry. B·2026
Same journal

Hydrogen-Bond Network in Equimolar <i>N</i>-Methylacetamide-Water: Integrated Neutron Scattering, Molecular Dynamics, DFT-NBO-AIM, and Machine Learning Analysis.

The journal of physical chemistry. B·2026
See all related articles

Related Experiment Video

Updated: Jul 8, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

Tracer diffusion in colloidal gels.

Sujin Babu1, Jean Christophe Gimel, Taco Nicolai

  • 1Polymères Colloïdes Interfaces, CNRS UMR6120, Université du Maine, F-72085 Le Mans cedex 9, France.

The Journal of Physical Chemistry. B
|January 4, 2008
PubMed
Summary
This summary is machine-generated.

Computer simulations reveal that tracer particle diffusion in colloidal gels depends on the accessible volume fraction, not gel structure. Critical slowing down occurs around 0.03 accessible volume fraction, with pore size distribution affecting particle movement at lower fractions.

More Related Videos

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

Published on: September 8, 2016

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Related Experiment Videos

Last Updated: Jul 8, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

Published on: September 8, 2016

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Area of Science:

  • Colloid Science
  • Soft Matter Physics
  • Computational Chemistry

Background:

  • Colloidal gels are complex fluids with applications in food, pharmaceuticals, and materials science.
  • Understanding particle dynamics within these gels is crucial for predicting material properties and performance.
  • Previous studies on tracer diffusion often focused on simplified models or specific gel types.

Purpose of the Study:

  • To investigate the factors governing tracer particle diffusion in colloidal gels.
  • To analyze the impact of gel structure and tracer size on particle mobility.
  • To identify critical phenomena and heterogeneity in tracer diffusion.

Main Methods:

  • Utilized computer simulations to model mean square displacement (MSD) of tracer particles.
  • Simulated colloidal gels formed via diffusion-limited and reaction-limited aggregation of hard spheres.
  • Analyzed the relationship between diffusion coefficient and accessible volume fraction (phi a).

Main Results:

  • The diffusion coefficient is primarily determined by the accessible volume fraction (phi a), irrespective of gel structure or tracer size.
  • Observed critical slowing down at phi a approximately 0.03, consistent with Lorentz gas models.
  • Identified strong heterogeneity in MSD at low phi a, linked to pore size distribution.

Conclusions:

  • Accessible volume fraction is the key determinant of tracer diffusion in colloidal gels.
  • Critical slowing down phenomena in these systems follow universal scaling laws.
  • Pore size heterogeneity significantly influences particle diffusion at lower volume fractions.