Jove
Visualize
Contact Us

Related Concept Videos

Colloids and Suspensions01:17

Colloids and Suspensions

1.8K
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 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...
1.8K
Colloids03:22

Colloids

17.5K
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 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...
17.5K

You might also read

Related Articles

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

Sort by
Same author

Neighborhood economic and demographic landscape as predictors of 90-day outcomes post-stroke hospitalization.

Frontiers in stroke·2026
Same author

Surface energies in crystals of mutually polarizing dipolar particles.

The Journal of chemical physics·2026
Same author

Race and Ethnic Disparities in Rehabilitation Services and Functional Recovery After Stroke.

Archives of physical medicine and rehabilitation·2025
Same author

Identifying determinants of readmission and death post-stroke using explainable machine learning.

PloS one·2025
Same author

Acoustoplasmonic Metasurfaces Based on Polymer-Grafted Nanoparticles.

Nano letters·2025
Same author

Early hospital readmission following stroke: the Florida Stroke Registry.

Frontiers in stroke·2025
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 Experiment Video

Updated: Jul 1, 2025

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
09:16

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

Published on: January 9, 2017

14.4K

Diffusing Wave Spectroscopy Measurements of Colloidal Suspension Dynamics.

Kimberly A Dennis1, Qi Li1, Nicholas Sbalbi1

  • 1Department of Chemical and Biomolecular Engineering, Allan P. Colburn Laboratory, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|March 12, 2024
PubMed
Summary
This summary is machine-generated.

Diffusing wave spectroscopy effectively measures silica particle dynamics, showing diffusivity decreases with concentration. The study highlights DWS

More Related Videos

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

12.1K
Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.3K

Related Experiment Videos

Last Updated: Jul 1, 2025

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
09:16

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

Published on: January 9, 2017

14.4K
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

12.1K
Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.3K

Area of Science:

  • Soft Matter Physics
  • Colloidal Science
  • Physical Chemistry

Background:

  • Understanding particle dynamics is crucial in soft matter and colloidal systems.
  • Diffusing wave spectroscopy (DWS) is a powerful technique for probing dynamics in opaque materials.
  • Charged silica particles are model systems for studying electrostatic interactions in dispersions.

Purpose of the Study:

  • To investigate the short-time dynamics of charged silica particles using DWS across a range of concentrations.
  • To determine the influence of electrostatic repulsion and hydrodynamic interactions on particle diffusivity.
  • To assess the sensitivity of DWS measurements to attractive interactions in colloidal systems.

Main Methods:

  • Diffusing wave spectroscopy (DWS) measurements were performed on charged silica particle suspensions.
  • Particle concentrations were varied from 0.065 to 0.352 volume fractions (12.7 to 55.8 wt %).
  • Experimental diffusivity data were compared with an effective hard-sphere model incorporating electrostatic repulsion.

Main Results:

  • Short-time diffusivity decreased with increasing particle concentration.
  • An effective hard-sphere model accurately described the data up to an effective volume fraction of 0.352, with an excluded shell radius ratio b/a = 1.3.
  • DWS measurements were found to be sensitive to repulsive forces but relatively insensitive to weak attractive interactions.

Conclusions:

  • The study successfully characterized the concentration-dependent dynamics of charged silica particles using DWS.
  • The findings validate the use of effective hard-sphere models for describing repulsive interactions in colloidal systems.
  • DWS is a valuable tool for studying repulsive interactions, but its sensitivity to attractions needs careful consideration.