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Updated: Jun 16, 2026

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders

Published on: October 4, 2022

Widely accessible method for 3D microflow mapping at high spatial and temporal resolutions.

Evan Lammertse¹, Nikhil Koditala², Martin Sauzade¹

¹Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794 USA.

Microsystems & Nanoengineering

|July 5, 2022

Summary

This summary is machine-generated.

We developed a simple brightfield microscopy technique to map microfluidic 3D flow patterns with high resolution. This method enhances the design and control of microfluidic devices for various applications.

Keywords:

Applied optics Engineering

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Published on: March 6, 2013

Area of Science:

Microfluidics
Biotechnology
Optical Engineering

Background:

Microfluidic technologies require precise 3D flow control for sample manipulation.
Existing methods for mapping microfluidic flows lack sufficient 3D and temporal resolution or require specialized equipment.

Purpose of the Study:

To present a simple, high-resolution 3D microfluidic flow mapping technique using brightfield microscopy.
To validate the method on single-phase and two-phase microfluidic systems.

Main Methods:

A defocusing approach utilizing brightfield microscopy and open-source software (ImageJ).
Tracking seed particles in 2D and classifying their Z-position using a reference library.
Comparison of traditional cross-correlation and deep learning methods for particle classification.

Main Results:

High-resolution 3D flow maps were generated for channel step expansion, displacement structures, and droplet microfluidics.
Demonstrated efficient particle shifting in displacement structures.
Revealed novel recirculation and folding patterns within microfluidic droplets.

Conclusions:

The developed brightfield technique offers a simple, accessible, and high-resolution method for mapping microfluidic flows.
This technique supports the design of novel microfluidic structures by providing detailed flow insights.
Addresses the growing need for precise fluid control at the microscale.