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Related Experiment Video

Updated: Feb 3, 2026

Author Spotlight: A High-Resolution, Single-Grain, In Vivo Pollen Hydration Bioassay for Arabidopsis thaliana
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Multifunctional Hierarchically-Assembled Hydrogel Particles with Pollen Grains via Pickering Suspension

Junyong Park1,2, Patrick S Doyle1

  • 1Department of Chemical Engineering , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|November 8, 2018
PubMed
Summary

Researchers developed a novel method to create multifunctional hydrogel particles using pollen grains. This technique enables large-scale production of core-shell particles with tunable properties for applications like drug delivery.

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Area of Science:

  • Interface and colloid science
  • Materials science
  • Biomaterials engineering

Background:

  • Hierarchical assembly of heterogeneous particles is crucial in materials science.
  • Developing scalable methods for creating functional particles is an ongoing challenge.

Purpose of the Study:

  • To develop a facile and scalable approach for producing multifunctional hydrogel particles armored with biological colloidal species.
  • To explore the potential applications of these engineered particles.

Main Methods:

  • Combining Pickering stabilization with photopolymerization.
  • Utilizing biocompatible hollow pollen grains as natural solid emulsifiers.
  • Forming water-in-oil (W/O) emulsion droplets stabilized by pollen grains.
  • Solidifying droplets into hydrogel particles via UV-induced polymerization.
  • Creating core-shell structures with pollen grains forming a robust shell.

Main Results:

  • Successfully produced large-scale multifunctional hydrogel particles with pollen grain shells.
  • Demonstrated tunable particle size by adjusting process parameters.
  • Observed transient floating behavior of core-shell particles upon hydration.
  • Incorporated magnetic or upconverting luminescent nanoparticles to expand functionality.

Conclusions:

  • The developed method offers a powerful approach for producing advanced hydrogel particles.
  • These core-shell particles show promise for applications in floating drug delivery and as ecofriendly proppants.
  • The hierarchical assembly of biological and synthetic components opens new design opportunities.