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Related Experiment Video

Updated: Jul 2, 2026

Computer Numerical Control Micromilling of a Microfluidic Acrylic Device with a Staggered Restriction for Magnetic Nanoparticle-Based Immunoassays

Computer Numerical Control Micromilling of a Microfluidic Acrylic Device with a Staggered Restriction for Magnetic Nanoparticle-Based Immunoassays

Published on: June 23, 2022

Micro flow cytometry utilizing a magnetic bead-based immunoassay for rapid virus detection.

Sung-Yi Yang¹, Kang-Yi Lien, Kao-Jean Huang

¹Department of Engineering Science, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan.

Biosensors & Bioelectronics

|September 2, 2008

Summary

This study introduces a novel microfluidic flow cytometer for rapid viral detection. The integrated system purifies and detects viruses using magnetic beads and immunoassays in just 40 minutes.

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Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles

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Last Updated: Jul 2, 2026

Computer Numerical Control Micromilling of a Microfluidic Acrylic Device with a Staggered Restriction for Magnetic Nanoparticle-Based Immunoassays

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Published on: June 23, 2022

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Published on: June 13, 2010

Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles

Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles

Published on: January 25, 2017

Area of Science:

Biomedical Engineering
Microfluidics
Immunotechnology

Background:

Accurate and rapid viral detection is crucial for public health.
Existing diagnostic methods can be time-consuming and complex.
Microfluidic devices offer potential for miniaturized and automated biological analysis.

Purpose of the Study:

To develop a miniature microfluidic flow cytometer for automated viral sample purification and detection.
To integrate multiple functional micro-devices onto a single chip for streamlined diagnostics.
To demonstrate the system's capability for rapid and sensitive virus quantification.

Main Methods:

Conjugation of magnetic beads with specific antibodies for target virus capture.
Utilizing a dye-labeled antibody for subsequent optical detection of captured viruses.
Integration of sample incubation, micro flow cytometry, and optical detection modules on a single chip.
Employing pneumatic micropumps and a micromixer for efficient sample purification and bead enrichment.
Leveraging a permanent magnet for magnetic bead manipulation.

Main Results:

Successful automated detection of virus samples at concentrations as low as 10(3) PFU/ml.
Demonstration of a complete diagnosis procedure, including sample incubation and virus detection, within approximately 40 minutes.
Validation of the integrated system's performance for virus counting and collection.

Conclusions:

The developed miniature microfluidic flow cytometer provides a powerful platform for rapid viral diagnosis.
The integrated system streamlines the process of viral sample purification and detection.
This technology holds significant potential for future biological applications and point-of-care diagnostics.