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Related Experiment Video

Updated: May 31, 2026

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
08:39

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles

Published on: October 16, 2017

Nanoparticle induced self-assembly.

G Helgesen1, E Svåsand, A T Skjeltorp

  • 1Physics Department, Institute for Energy Technology, NO-2027 Kjeller, Norway.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 23, 2011
PubMed
Summary
This summary is machine-generated.

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The magnetic hole effect enables controlled self-assembly of micro- to millimeter-sized components using magnetic fields and ferrofluids. This method also allows for viscosity measurements and ordering of nanostructures.

Area of Science:

  • Physics
  • Materials Science
  • Colloid Science

Background:

  • Traditional self-assembly focuses on molecular-scale processes without external guidance.
  • Self-assembly principles extend beyond the nanoscale to micro- and millimeter-sized components.

Purpose of the Study:

  • To investigate the 'magnetic hole' effect for manipulating nonmagnetic particles.
  • To explore self-assembly dynamics and ordering in micro- and millimeter-sized systems.
  • To demonstrate novel applications such as micro-viscosity measurements.

Main Methods:

  • Utilizing ferrofluids (colloidal magnetic nanoparticles) to create 'magnetic holes'.
  • Manipulating nonmagnetic particles (microspheres, macromolecules, nanoparticles) with external magnetic fields.
  • Confining microspheres to a monolayer between parallel plates for dynamic studies.

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Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
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Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
08:09

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

Published on: May 9, 2014

Related Experiment Videos

Last Updated: May 31, 2026

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
08:39

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles

Published on: October 16, 2017

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
09:02

Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
08:09

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

Published on: May 9, 2014

Main Results:

  • Observed diverse dynamical behaviors and assemblages of microspheres under static or oscillating magnetic fields.
  • Demonstrated the use of oscillating magnetic holes for viscosity measurements of small fluid volumes.
  • Achieved ordering of dilute macromolecule and nanoparticle dispersions via structural correlations with ferrofluid particles.

Conclusions:

  • The magnetic hole effect provides a versatile platform for controlled self-assembly at the micro- to millimeter scale.
  • This technique offers new avenues for studying particle dynamics and fluid properties in confined systems.
  • Self-assembly at this scale is driven by structural correlations, not solely macroscopic magnetostatic interactions.