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 Experiment Videos

Brownian coagulation at high concentration.

M C Heine1, S E Pratsinis

  • 1Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zürich, Switzerland.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 10, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Selective sensing of isoprene by Ti-doped ZnO for breath diagnostics.

Journal of materials chemistry. B·2020
Same author

Highly selective detection of methanol over ethanol by a handheld gas sensor.

Nature communications·2019
Same author

Correction: Reactive polycyclic aromatic hydrocarbon dimerization drives soot nucleation.

Physical chemistry chemical physics : PCCP·2018
Same author

Reactive polycyclic aromatic hydrocarbon dimerization drives soot nucleation.

Physical chemistry chemical physics : PCCP·2018
Same author

Noninvasive Body Fat Burn Monitoring from Exhaled Acetone with Si-doped WO<sub>3</sub>-sensing Nanoparticles.

Analytical chemistry·2017
Same author

Coagulation of Agglomerates Consisting of Polydisperse Primary Particles.

Langmuir : the ACS journal of surfaces and colloids·2016
Same journal

Controlled Secondary Growth of CAU-1-NH<sub>2</sub> Membranes with Improved CO<sub>2</sub> Separation Performance.

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

Facile Fabrication and Stable Mechanism of a Microscale Heavy Calcium Carbonate Suspension.

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

Polycationic Biocidal Coatings: The Mechanism of Their Interaction with Cells.

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

Atomic-Scale Displacement in Ordered SmMnO<sub>3</sub> Nanoislands.

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

Vacancy Defect Modulated Interfacial Thermal Transport and Phonon Localization in AlGaN/GaN Heterojunctions.

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

Immobilization of Ytterbium via Polyphenol Chemistry on Implant Materials for Enhanced Cytocompatibility and Antibacterial Properties.

Langmuir : the ACS journal of surfaces and colloids·2026
See all related articles

Particle growth accelerates significantly at higher concentrations, deviating from classic theories. Simulations show self-preserving size distributions form even in concentrated suspensions, though they broaden with increasing particle volume fraction.

Area of Science:

  • Colloid and Surface Science
  • Materials Science
  • Chemical Engineering

Background:

  • Brownian coagulation is a key process in particle growth.
  • Existing models, like Smoluchowski's, are well-established for dilute systems.
  • High particle concentrations introduce complexities not fully captured by dilute models.

Purpose of the Study:

  • Investigate particle growth via Brownian coagulation in concentrated suspensions.
  • Evaluate the accuracy of classic coagulation models at high particle volume fractions.
  • Determine the influence of concentration on self-preserving size distributions (SPSDs).

Main Methods:

  • Solving Langevin dynamics (LD) equations for individual particle trajectories.
  • Simulating polydisperse suspensions across a range of particle volume fractions (phis).

Related Experiment Videos

  • Monitoring the attainment and characteristics of SPSDs.

    • Main Results:

    • Classic Smoluchowski theory is accurate only below 0.1% particle volume fraction.
    • Coagulation rates are 4-10 times faster at 10-20% phis compared to classic predictions.
    • SPSDs develop in concentrated suspensions (up to 35% phis) but broaden with increasing concentration.
    • A new overall coagulation rate is proposed for high concentrations.

    Conclusions:

    • Particle coagulation kinetics are strongly concentration-dependent.
    • Existing models underestimate coagulation rates at high particle concentrations.
    • Concentration affects SPSD characteristics, broadening them as volume fraction increases.
    • Fractal agglomerates may only temporarily exhibit SPSDs due to increasing effective volume fraction.