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

Colloids and Suspensions01:17

Colloids and Suspensions

1.9K
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...
1.9K

You might also read

Related Articles

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

Sort by
Same author

Probing the Depth-Resolved Structure of Adsorbed Azobenzene Surfactant Films by QCM-D.

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

Light-Induced Photomechanical Patterning of Ferroelectric Polarization.

ACS applied materials & interfaces·2026
Same author

Particle-Based Detection of Surface Chemistry via Optical Microscopy-Integrating Microfluidics, Light-Induced Activity of Colloids and Data Science.

Small methods·2026
Same author

Reversible Adsorption and Interfacial Photoisomerization of Azobenzene Surfactants Studied by QCM.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Statistical distribution of elevation from a planar interface of phoretically active microparticles.

Lab on a chip·2025
Same author

Surface-Sensitive Fractioning of Flowing Colloidal Suspensions Sedimented at a Photochemically Active Wall.

Small (Weinheim an der Bergstrasse, Germany)·2025

Related Experiment Video

Updated: Aug 5, 2025

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
09:45

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Published on: February 4, 2011

27.6K

Versatile Microfluidics Separation of Colloids by Combining External Flow with Light-Induced Chemical Activity.

Marek Bekir1, Marcel Sperling2, Daniela Vasquez Muñoz1

  • 1Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht Str. 24/25, 14476, Potsdam, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|March 27, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel microfluidic method using light-activated surfactants to separate particles based on size and surface properties. This versatile technique enables particle chromatography for advanced bioanalytics and filtration applications.

Keywords:
azobenzene containing surfactantscolloidslight-induced motionlocal light driven diffiusioosmosisparticle separation

More Related Videos

A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
09:58

A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals

Published on: May 10, 2018

9.6K
Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering
10:27

Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering

Published on: July 10, 2016

9.2K

Related Experiment Videos

Last Updated: Aug 5, 2025

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
09:45

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Published on: February 4, 2011

27.6K
A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
09:58

A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals

Published on: May 10, 2018

9.6K
Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering
10:27

Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering

Published on: July 10, 2016

9.2K

Area of Science:

  • Colloid and Surface Science
  • Microfluidics
  • Biotechnology

Background:

  • Particle separation by size, morphology, or material is crucial for filtration and bioanalytics.
  • Separating particles based solely on surface properties or morphology presents significant challenges.
  • Existing methods often lack the versatility to distinguish particles with subtle differences.

Purpose of the Study:

  • To develop a novel, versatile method for particle separation based on size and surface properties.
  • To leverage microfluidic flow and light-induced self-phoresis/osmosis for particle manipulation.
  • To demonstrate the separation of particles with distinct and subtle physico-chemical differences.

Main Methods:

  • Utilizing pressure-driven microfluidic flow combined with local self-phoresis/osmosis.
  • Employing a photoactive azobenzene-surfactant solution activated by light to induce chemical activity.
  • Analyzing particle displacement and elution times within the microfluidic shear flow.

Main Results:

  • Achieved vertical particle displacement dependent on size and surface properties.
  • Demonstrated successful separation of bulk-porous from bulk-compact colloidal particles.
  • Showcased the separation of particles with only slight differences in surface physico-chemical properties.

Conclusions:

  • The proposed method offers a simple and versatile approach for particle separation.
  • This technique advances particle chromatography by enabling separation based on surface characteristics.
  • The findings have significant implications for filtration, bioanalytics, and materials science.