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Related Experiment Video

Updated: May 27, 2026

Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles

Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles

Published on: March 13, 2016

Differentially photo-crosslinked polymers enable self-assembling microfluidics.

Mustapha Jamal¹, Aasiyeh M Zarafshar, David H Gracias

¹Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Nature Communications

|November 10, 2011

Summary

This summary is machine-generated.

Researchers self-assembled curved microfluidic devices using photopatterned polymers. These self-assembling curved microfluidic networks mimic natural systems for efficient fluid transport.

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Last Updated: May 27, 2026

Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles

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Published on: March 13, 2016

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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Published on: January 8, 2014

Area of Science:

Materials Science
Biomimetics
Microfluidics

Background:

Naturally occurring systems like leaves and tissues exhibit complex 3D curved structures with embedded fluidic channels for efficient transport.
Replicating these intricate, curved architectures in synthetic systems remains a significant challenge in microfluidics and materials science.

Purpose of the Study:

To develop a novel method for the self-assembly of photopatterned polymers into curved microfluidic devices.
To investigate the spontaneous curvature of differentially photo-crosslinked SU-8 films.
To demonstrate the integration of microfluidic channels with self-assembled curved polymer structures.

Main Methods:

Utilizing photolithography to pattern SU-8 (a negative photoresist) films with differential photo-crosslinking.
Inducing spontaneous and reversible film curvature through de-solvation and re-solvation processes.
Integrating polydimethylsiloxane (PDMS) microfluidic channels with the curved SU-8 structures.

Main Results:

Demonstrated the spontaneous and reversible self-assembly of SU-8 films into curved geometries.
Achieved self-assembly of various shapes including cylinders, cubes, and bidirectionally folded sheets through photopatterning.
Successfully created curved microfluidic networks by integrating PDMS channels with the self-assembled SU-8 structures.

Conclusions:

Photopatterned polymers can self-assemble into curved microfluidic devices, mimicking natural systems.
This approach offers a new pathway for fabricating complex 3D microfluidic architectures.
The developed method holds potential for applications requiring targeted fluid transport in curved 3D environments.