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Related Concept Videos

Colloids03:22

Colloids

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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...
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Colloids and Suspensions01:17

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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...
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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...
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The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
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Updated: Jan 12, 2026

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Transient Emulsions: A New Paradigm for Dynamic Colloidal Assembly.

An Cao1, Dilong Liu1,2, Yue Li3

  • 1Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.

Accounts of Chemical Research
|November 4, 2025
PubMed
Summary
This summary is machine-generated.

Transient emulsions, lacking surfactants, enable rapid, surfactant-free assembly of colloidal nanoparticles and unique asymmetric superstructures. This breakthrough offers new pathways for creating advanced materials and functional devices.

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Area of Science:

  • Colloid and interface science
  • Materials science
  • Nanotechnology

Background:

  • Conventional emulsions rely on surfactants, limiting droplet size, morphology, and stability.
  • Surfactants can introduce toxicity and require high energy input for emulsification.
  • Thermodynamic instability due to Ostwald ripening and coalescence restricts conventional emulsion applications.

Purpose of the Study:

  • To introduce transient emulsions as a novel paradigm in colloid science.
  • To explore the unique properties of transient emulsions, such as zero interfacial tension and spontaneous emulsification.
  • To demonstrate the application of transient emulsions in the self-assembly of colloidal nanoparticles and the creation of functional superstructures.

Main Methods:

  • Utilizing partially miscible liquid pairs (e.g., water and 1-butanol) to form transient emulsions.
  • Leveraging mutual diffusion at the interface to create a blurred miscible layer and reduce interfacial tension.
  • Employing template-confined emulsification and aerosol techniques for controlled superstructuring.

Main Results:

  • Achieved rapid, surfactant-free assembly of plasmonic superstructures within seconds.
  • Demonstrated uniform superstructuring across multiple scales using template confinement.
  • Enabled asymmetric superstructuring through novel hollowing mechanisms in transient aerosol emulsions.
  • Fabricated functional superstructures, including anisotropic conductive bonding materials and tunable microlenses.

Conclusions:

  • Transient emulsions offer a versatile platform for dynamic, out-of-equilibrium colloidal self-assembly.
  • The absence of interfacial tension constraints allows for unprecedented control over structure, symmetry, and dynamics.
  • Transient emulsions pave the way for novel functional materials with applications in micro-electronics, optics, and display technologies.