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Updated: Feb 11, 2026

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method
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Hydrodynamically Formed Uniform Thick Coatings on Microspheres.

Shuaishuai Liang1,2, Jiang Li2, Qinda Xu2

  • 1State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China.

Small (Weinheim an Der Bergstrasse, Germany)
|May 3, 2018
PubMed
Summary

This study presents a hydrodynamic method to uniformly coat microspheres, overcoming challenges in surface modification and drug delivery. The technique centers microspheres in droplets, enabling consistent shell formation for advanced particle applications.

Keywords:
coating fabricationdouble emulsionhydrodynamic forceuniform coatings

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Biotechnology

Background:

  • Uniform coating of microspheres is crucial for applications like drug delivery and surface modification.
  • Existing methods face challenges in achieving consistent, thick coatings, especially with density differences.

Purpose of the Study:

  • To develop a novel hydrodynamic method for precise microsphere centering within droplets.
  • To enable the formation of uniform coatings on microspheres for advanced material applications.

Main Methods:

  • Utilizing hydrodynamic pressure to center microspheres (tens to hundreds of micrometers) within surrounding liquid shells.
  • Employing polymerizable liquids for shell solidification via thermal or light-induced processes.
  • Demonstrating the method's efficacy with gas, liquid, or solid core microspheres.

Main Results:

  • Successfully centered microspheres within droplets, irrespective of density differences.
  • Achieved uniform, thick coatings on core-shell particles.
  • Demonstrated versatility with various core materials (gas, liquid, solid).

Conclusions:

  • The hydrodynamic centering method offers a robust solution for uniform microsphere coating.
  • This technique advances surface modification and controlled drug delivery applications.
  • Enables the creation of novel core-shell particles with tailored properties.