Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Colloids and Suspensions

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...

Boundary Layer Characteristics

Boundary Layer Characteristics

When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...

Colloids

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...

Theories of Dissolution: Diffusion Layer Model

Theories of Dissolution: Diffusion Layer Model

Dissolution, the process by which drug particles dissolve in a solvent, is explained by the diffusion layer model, a theoretical framework that simulates the absorption of oral drugs and allows us to analyze experimental data.
This process starts with a thin layer, saturated with the drug, forming at the interface between the solid and liquid. The solute then diffuses from this layer into the main solution. The Noyes-Whitney equation suggests that the rate of dissolution relies on the diffusion...

Polymers

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...

Diffusion

Diffusion

Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...

You might also read

Related Articles

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

Sort by

Same author

Text-Embedding-Assisted Design of Rigid Molecular Cations for Suppressing Ion Migration in Hybrid Single-Crystal X-ray Detectors.

The journal of physical chemistry letters·2026

Same author

Beyond the Limit of Specific Strength in Casting Metals via Dual Nanoprecipitates.

Nano letters·2026

Same author

A-Site Cation-Induced Hot-Carrier Lifetime Extension in 2D Perovskites: A New Strategy for X-Ray Detection Enhancement.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

An Intermediate-Aided Perovskite Phase Purification for High-Performance Solar Cells.

Journal of the American Chemical Society·2024

Same author

Ultrafast Synthesis of Transition Metal Phosphides in Air via Pulsed Laser Shock.

Nano letters·2024

Same author

Rational Design of A-Site Cation for High Performance Lead-Free Perovskite X-Ray Detectors.

Small (Weinheim an der Bergstrasse, Germany)·2024

Search research articles

Related Experiment Video

Updated: Jan 22, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Interactions between Nanoparticles and Polymers in the Diffusion Boundary Layer during Freezing Colloidal

Jiaxue You¹, Jincheng Wang¹, Lilin Wang¹

¹State Key Laboratory of Solidification Processing, School of Materials Science and Engineering , Northwestern Polytechnical University , Youyi West Road 127 , Xi'an 710072 , P. R. China.

Langmuir : the ACS Journal of Surfaces and Colloids

|July 13, 2019

Summary

This study reveals how nanoparticle size and pulling speed affect polymer diffusion during freeze-casting. Larger particles and faster speeds promote better ceramic microstructures by optimizing polymer movement.

More Related Videos

Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

Published on: January 8, 2016

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Published on: June 1, 2016

Related Experiment Videos

Last Updated: Jan 22, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

Published on: January 8, 2016

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Published on: June 1, 2016

Area of Science:

Materials Science
Colloid Science
Polymer Science

Background:

Freeze-casting is a method for producing porous ceramics.
Understanding nanoparticle-polymer interactions is crucial for controlling microstructure during freeze-casting.

Purpose of the Study:

To investigate diffusion interactions between nanoparticles and polymers in freezing colloidal suspensions.
To explore the effect of nanoporous media size on polymer diffusion instability.

Main Methods:

Investigated diffusion interactions during freezing colloidal suspensions.
Analyzed the influence of nanoparticle size and pulling speed on polymer diffusion and resulting morphology.
Examined the role of nanoporous media structure in polymer chain motion.

Main Results:

Small nanoparticles and low pulling speeds impede polymer diffusion, leading to banded structures due to restricted polymer chain motion.
Increased particle size or decreased solute size alleviates diffusion obstruction.
Higher pulling speeds facilitate polymer passage through the porous layer, resulting in dendritic structures.

Conclusions:

Polymer diffusion significantly controls the freezing morphology of colloidal suspensions.
Larger nanoparticle size and moderately higher pulling speeds are beneficial for developing well-defined microstructures in freeze-cast porous ceramics.