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

Colloidal precipitates01:09

Colloidal precipitates

1.0K
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...
1.0K
Colloids03:22

Colloids

18.7K
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...
18.7K
Colloids and Suspensions01:17

Colloids and Suspensions

2.5K
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...
2.5K
Intermolecular Forces03:13

Intermolecular Forces

63.2K
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...
63.2K
Induced Electric Dipoles01:28

Induced Electric Dipoles

4.5K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.5K
Coagulation01:06

Coagulation

465
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...
465

You might also read

Related Articles

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

Sort by
Same author

Virus-Inspired Particle Coatings: Tunable Specific Multivalent Interactions with Mucus Barriers.

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

Closed Loop Navigation of a Complex State Space: Assembling Anisotropic Colloids into Perfect Crystals.

ACS nano·2026
Same author

Drug & virus transport across biological barriers: interactions, diffusion, partitioning, permeability, and selectivity.

Soft matter·2026
Same author

Feedback Controlled Reconfiguration of Ellipsoidal Colloids between Interfacial Liquid, Nematic, and Crystal States.

ACS applied materials & interfaces·2025
Same author

Fabrication and Modeling of a Thermoreversible Modular Core-Shell Colloidal System.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Directed assembly of binary suspensions of magnetizable ellipsoids.

Soft matter·2025

Related Experiment Video

Updated: Oct 17, 2025

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.1K

Anisotropic colloidal interactions & assembly in AC electric fields.

Rachel S Hendley1, Isaac Torres-Díaz1, Michael A Bevan1

  • 1Chemical & Biomolecular Engr., Johns Hopkins Univ., Baltimore, MD 21218, USA. mabevan@jhu.edu.

Soft Matter
|October 7, 2021
PubMed
Summary

We developed a new simulation method to accurately model anisotropic particles in electric fields. A novel "stretched point dipole potential" effectively captures particle behavior across various conditions.

More Related Videos

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

8.4K
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

12.3K

Related Experiment Videos

Last Updated: Oct 17, 2025

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.1K
Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

8.4K
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

12.3K

Area of Science:

  • Colloid science
  • Computational physics
  • Materials science

Background:

  • Anisotropic colloidal particles exhibit complex behaviors in electric fields.
  • Accurate modeling requires understanding dipole-field and dipole-dipole interactions.
  • Existing models may not capture behavior across all concentrations and field strengths.

Purpose of the Study:

  • To develop and validate analytical potentials for simulating anisotropic colloidal particles in AC electric fields.
  • To introduce an inverse Monte Carlo simulation algorithm for optimizing these potentials.
  • To identify a potential model suitable for diverse microstructures and ordering.

Main Methods:

  • Analytical potential identification for dipole-field and dipole-dipole interactions.
  • Inverse Monte Carlo simulation to match experimental and simulated particle distribution functions.
  • Testing potentials across varying electric field amplitudes, concentrations, and particle ordering.

Main Results:

  • Two analytical potentials were identified that accurately capture experimental observations.
  • An effective ellipsoidal point dipole potential is suitable for low concentrations.
  • A novel stretched point dipole potential accurately models particle behavior at all concentrations and field strengths.

Conclusions:

  • The stretched point dipole potential offers a simple, accurate, and adjustable model for field-mediated microstructures.
  • This potential can be applied to predict and control the assembly of anisotropic particles.
  • The findings advance the understanding of electric field-driven self-assembly in colloidal systems.