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Related Experiment Video

Updated: Jun 13, 2026

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

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Nanoparticle self-structuring in a nanofluid film spreading on a solid surface.

Alex Nikolov1, Kirti Kondiparty, Darsh Wasan

  • 1Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|May 5, 2010
PubMed
Summary

Nanoparticle self-structuring in thin films enhances liquid spreading on surfaces. Film thickness and nanoparticle layering depend on drop size, influencing nanofluid behavior.

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Area of Science:

  • Colloid and Surface Science
  • Materials Science
  • Fluid Dynamics

Background:

  • Nanofluids exhibit enhanced spreading on solids compared to base fluids.
  • The underlying mechanisms for this enhanced spreading are not fully understood.
  • Particle-solid interactions significantly influence nanofluid spreading dynamics.

Purpose of the Study:

  • To experimentally observe nanoparticle self-structuring within nanofluid films.
  • To investigate the phenomenon of nanoparticle layering during film thinning.
  • To understand the relationship between film thickness, nanoparticle structure, and spreading dynamics.

Main Methods:

  • Utilized silica-nanoparticle aqueous suspension (19 nm, 10 vol%).
  • Employed reflected light interferometry for film analysis.

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Last Updated: Jun 13, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
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Published on: May 9, 2014

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  • Studied film thinning on a hydrophilic glass surface.

    • Main Results:

    • Observed nanoparticle layering (stratification) in the thinning nanofluid film.
    • Demonstrated that film thickness and nanoparticle layer count depend on the initial drop size (capillary pressure).
    • Small drops formed thicker films with more particle layers than large drops.

    Conclusions:

    • Nanoparticle self-structuring is a key factor in nanofluid film thinning and spreading.
    • Film stability and structure are influenced by capillary pressure and film size.
    • Results provide insights into the complex mechanisms of enhanced nanofluid spreading.