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Updated: Jul 23, 2025

Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly

Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly

Published on: November 4, 2021

Modular assembly of microswimmers with liquid compartments.

Minghan Hu¹, Xueting Shen¹, Daniel Tran¹

¹Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zürich, Zürich, Switzerland.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|July 18, 2023

Summary

This summary is machine-generated.

Researchers developed a modular platform for fabricating artificial microswimmers with multiple liquid compartments. This innovation enables precise cargo delivery for applications in medicine and environmental science.

Keywords:

capillary assembly microcapsules microfluidic microswimmers

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Area of Science:

Colloidal science
Materials science
Microfluidics

Background:

Artificial microswimmers are key models for out-of-equilibrium systems.
Potential applications include biomedicine and environmental remediation, often involving cargo delivery.
Fabricating microswimmers with multiple liquid compartments for efficient cargo loading is challenging.

Purpose of the Study:

To present a modular fabrication platform for microswimmers with multiple liquid compartments.
To enable precise assembly and programmable functionalities for cargo transport and release.

Main Methods:

Utilized microfluidic synthesis for creating polymer-based microcapsules (3-6 μm).
Employed sequential capillarity-assisted particle assembly (sCAPA) for precise microcapsule assembly.
Integrated microfluidic devices with sCAPA for modular microswimmer fabrication.

Main Results:

Successfully synthesized monodisperse microcapsules with diverse liquid cargoes.
Assembled microcapsules into versatile microswimmers with multiple liquid compartments using sCAPA.
Demonstrated high precision in assembling microswimmers with programmable functionalities.

Conclusions:

The developed platform offers a flexible approach for fabricating modular microswimmers.
These microswimmers show potential for active cargo transport and on-demand release.
This work advances the design and application of artificial microswimmers.