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

441
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...
441
Colloids03:22

Colloids

17.1K
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 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...
17.1K
Coagulation01:06

Coagulation

249
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...
249
Colloids and Suspensions01:17

Colloids and Suspensions

1.6K
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...
1.6K
Euler's Formula for Pin-Ended Columns01:21

Euler's Formula for Pin-Ended Columns

264
In structural engineering, the stability of columns under compressive axial loads is a critical consideration, described as buckling. A typical example involves a column PQ, which is pin-connected at both ends and subjected to a centric axial load F applied at one end, with a reaction force of F' = -F at the other end. Here, it is crucial to understand that when an applied load exceeds the critical load, buckling occurs as the system becomes unstable.
To calculate the critical load,...
264

You might also read

Related Articles

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

Sort by
Same author

Fatigue-resistant and tough double network granular elastomers.

Science advances·2026
Same author

Particle Size-Driven Transition from Multilayer Aggregates to Ordered Monolayers at Gas Marble Interfaces.

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

Supraparticles with Enhanced Mechanical and Signal Stability for Identification of Objects.

ACS applied nano materials·2026
Same author

Quantifying Polydopamine Shell Hydration in Core-Shell Colloids by Analytical Ultracentrifugation: Implications for Self-Assembly and Structural Color of Photonic Crystals.

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

Emission enhancement of colloidal quantum dots confined in double disc nano-antennas with controlled opening.

Nanoscale·2025
Same author

Effect of Pore Structure of Inverse Opals on Wetting Transitions and Liquid Imbibition.

Langmuir : the ACS journal of surfaces and colloids·2025

Related Experiment Video

Updated: May 9, 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

12.1K

Control of Buckling of Colloidal Supraparticles.

Lukas J Roemling1, Gaia De Angelis2, Annika Mauch1

  • 1Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute of Interfaces and Particle Technology, 91058, Erlangen, Germany.

Small (Weinheim an Der Bergstrasse, Germany)
|May 3, 2025
PubMed
Summary

Controlling supraparticle morphology is key. Researchers tailored particle-surfactant interactions using pH in emulsion droplets to precisely control supraparticle structures during slow drying.

Keywords:
bucklingcolloidsemulsionsself‐assemblysupraparticlessurfactants

More Related Videos

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

9.7K
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

11.0K

Related Experiment Videos

Last Updated: May 9, 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

12.1K
Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

9.7K
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

11.0K

Area of Science:

  • Colloid and Surface Science
  • Materials Chemistry
  • Self-Assembly

Background:

  • Supraparticle properties depend on primary particle arrangement.
  • Controlling supraparticle morphology during slow drying is challenging.
  • Emulsion droplets serve as templates for supraparticle formation.

Purpose of the Study:

  • To control supraparticle morphology under slow drying conditions.
  • To tailor particle-surfactant interactions via local pH.
  • To achieve tunable supraparticle structures.

Main Methods:

  • Utilizing water/oil emulsions to template supraparticle formation.
  • Manipulating local pH within aqueous droplets to alter surfactant protonation.
  • Adjusting initial pH to control the timing of interfacial adsorption.

Main Results:

  • Low pH protonates surfactant headgroups, reducing particle repulsion and promoting interfacial adsorption.
  • This pH-triggered adsorption leads to buckled supraparticle morphologies.
  • Tunable morphologies achieved, ranging from buckled to smooth spheres and crystalline clusters.

Conclusions:

  • Local pH control offers a method to direct supraparticle assembly pathways.
  • Supraparticle morphology can be precisely tailored by adjusting the initial pH.
  • This provides a versatile route for fabricating complex colloidal structures.