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Colloidal precipitates01:09

Colloidal precipitates

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...
Colloids and Suspensions01:17

Colloids and Suspensions

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...
Colloids03:22

Colloids

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...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Coagulation01:06

Coagulation

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...
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

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Related Experiment Video

Updated: May 20, 2026

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

Janus and multiblock colloidal particles.

Qian Chen1, Jing Yan, Jie Zhang

  • 1Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 7, 2012
PubMed
Summary
This summary is machine-generated.

Researchers are developing new Janus and multiblock colloidal particles for advanced materials. These particles enable precise self-assembly into ordered structures like clusters and lattices, opening new avenues in colloid science and technology.

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Synthesis and Characterization of Supramolecular Colloids
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Related Experiment Videos

Last Updated: May 20, 2026

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

Preparation and 3D Tracking of Catalytic Swimming Devices
06:50

Preparation and 3D Tracking of Catalytic Swimming Devices

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Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Area of Science:

  • Colloid and Materials Science
  • Nanotechnology
  • Supramolecular Chemistry

Background:

  • Colloidal particles offer tunable properties for advanced materials.
  • Controlling particle orientation during self-assembly is crucial for emergent functions.
  • Janus and multiblock particles provide unique building blocks for complex structures.

Purpose of the Study:

  • To review recent advancements in the synthesis and self-assembly of Janus and multiblock colloidal particles.
  • To highlight opportunities in colloid science and technology enabled by orientational order.
  • To discuss rational self-assembly strategies and methods for stabilizing colloidal structures.

Main Methods:

  • Review of literature on synthesis of anisotropic colloidal particles.
  • Analysis of self-assembly principles for colloidal clusters and lattices.
  • Description of methods for locking assembled colloidal structures.
  • Exploration of concepts like molecular colloids and colloid valence.

Main Results:

  • Demonstration of rational self-assembly into colloidal clusters (e.g., tetrahedra).
  • Introduction of a method to permanently lock assembled colloidal clusters.
  • Review of progress in assembling 2D colloidal networks, including the kagome lattice.
  • Identification of new opportunities enabled by controlled orientational order.

Conclusions:

  • Janus and multiblock colloidal particles are powerful tools for designing ordered materials.
  • Controlled self-assembly unlocks new functionalities in colloid science.
  • Future research can leverage these particles for novel technological applications.