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

Colloids03:22

Colloids

17.8K
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...
17.8K
Coagulation01:06

Coagulation

357
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
357
Colloids and Suspensions01:17

Colloids and Suspensions

2.1K
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...
2.1K
Colloidal precipitates01:09

Colloidal precipitates

729
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
729
Intermolecular Forces03:13

Intermolecular Forces

60.0K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
60.0K
Van der Waals Interactions01:24

Van der Waals Interactions

65.1K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
65.1K

You might also read

Related Articles

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

Sort by
Same author

Adsorption of Mixed Micelles of Polysorbate 80 and Oleic Acid to the Air-Water Interface.

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

Supramolecular Assembly of Lanthanide-Binding Tag Peptides for Aqueous Separation of Rare Earth Elements.

ACS nano·2025
Same author

The Role of Asparagine as a Gatekeeper Residue in the Selective Binding of Rare Earth Elements by Lanthanide-Binding Peptides.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Correction: Interfacial rheology of lanthanide binding peptide surfactants at the air-water interface.

Soft matter·2025
Same author

Lanthanide binding peptide surfactants at air-aqueous interfaces for interfacial separation of rare earth elements.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Enhanced rare earth element recovery with cross-linked glutaraldehyde-lanthanide binding peptides in foam-based separations.

Journal of colloid and interface science·2024

Related Experiment Video

Updated: Aug 30, 2025

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

12.2K

Hydrodynamic interactions between charged and uncharged Brownian colloids at a fluid-fluid interface.

Archit Dani1, Mohsen Yeganeh2, Charles Maldarelli3

  • 1Intel Corporation, Hillsboro, OR 97123, USA.

Journal of Colloid and Interface Science
|August 29, 2022
PubMed
Summary

Colloid self-assembly at fluid interfaces is influenced by particle size and interactions. Simulations show clustering and ordering occur at high Péclet numbers, while hydrodynamic interactions promote separation at lower numbers.

Keywords:
Capillary attractionElectrostatic repulsionHydrodynamicsLangevin dynamicsParticles at interfaces

More Related Videos

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

11.1K
Taking Advantage of Reduced Droplet-surface Interaction to Optimize Transport of Bioanalytes in Digital Microfluidics
07:57

Taking Advantage of Reduced Droplet-surface Interaction to Optimize Transport of Bioanalytes in Digital Microfluidics

Published on: November 10, 2014

8.0K

Related Experiment Videos

Last Updated: Aug 30, 2025

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

12.2K
Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

11.1K
Taking Advantage of Reduced Droplet-surface Interaction to Optimize Transport of Bioanalytes in Digital Microfluidics
07:57

Taking Advantage of Reduced Droplet-surface Interaction to Optimize Transport of Bioanalytes in Digital Microfluidics

Published on: November 10, 2014

8.0K

Area of Science:

  • Colloid and Surface Science
  • Materials Science
  • Computational Physics

Background:

  • Colloid self-assembly at fluid interfaces is governed by a balance of forces, including deterministic interactions, viscous drag, and Brownian motion.
  • As colloid size decreases, thermal and drag forces become significant, impacting the formation of ordered structures for materials applications.

Purpose of the Study:

  • To investigate the lateral interfacial assembly of particles in Brownian and non-Brownian regimes using Langevin dynamic simulations.
  • To explore the influence of capillary attraction, electrostatic repulsion, thermal fluctuations, and hydrodynamic interactions (HI) on particle assembly.

Main Methods:

  • Langevin dynamic simulations were performed for particle pairs at a liquid-liquid interface with high viscosity contrast.
  • Simulations considered neutrally wetted particles (contact angle θ=90°).
  • Hydrodynamic interactions and particle immersion depth effects were incorporated.

Main Results:

  • Clustering, fractal growth, and particle ordering were observed at critically large Péclet (Pe) numbers.
  • At smaller Pe numbers, particle motion tended to be uncorrelated, with increased separation, especially when HI were included.
  • Hydrodynamic interactions significantly influenced particle separation and spatial correlation.

Conclusions:

  • The Péclet number is a critical parameter determining the assembly behavior of interfacial colloids.
  • Hydrodynamic interactions play a crucial role in preventing ordered assembly and promoting particle dispersion at lower Péclet numbers.
  • Understanding these dynamics is key for designing novel materials from self-assembled colloidal structures.