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Related Experiment Video

Updated: May 29, 2026

Fluorescence detection methods for microfluidic droplet platforms

Fluorescence detection methods for microfluidic droplet platforms

Published on: December 10, 2011

Micro-total analysis system for virus detection: microfluidic pre-concentration coupled to liposome-based detection.

John T Connelly¹, Sowmya Kondapalli, Marc Skoupi

¹Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.

Analytical and Bioanalytical Chemistry

|September 13, 2011

Summary

This study presents an integrated microfluidic biosensor for rapid enteric virus detection in water. The device uses pre-concentration and liposome amplification, achieving a lower detection limit for improved environmental screening.

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Last Updated: May 29, 2026

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Area of Science:

Environmental microbiology
Biosensor technology
Microfluidics

Background:

Traditional enteric virus detection methods (cell culture, PCR) are time-consuming and require extensive sample preparation.
Environmental water monitoring for viruses is crucial for public health but faces technical challenges.
Microfluidic devices offer potential for rapid, sensitive, and portable pathogen detection.

Purpose of the Study:

To develop an integrated microfluidic biosensor for sensitive enteric virus detection in environmental water.
To combine sample pre-concentration and liposome-based signal amplification for enhanced detection.
To validate the device using feline calicivirus (FCV) as a model for human norovirus.

Main Methods:

Development of an integrated microfluidic device with in situ fabricated nanoporous membranes.
Utilizing electric fields for pre-concentration of virus-liposome complexes.
Employing a liposome-based immunoassay sandwich approach with fluorescent dye release upon lysis for detection.

Main Results:

The integrated microfluidic biosensor achieved a limit of detection of 1.6 × 10(5) PFU/mL for FCV.
This detection limit is an order of magnitude lower than a similar device without pre-concentration.
The system demonstrated enhanced antibody-virus binding efficiency through pre-concentration.

Conclusions:

The integrated microfluidic biosensor significantly improves virus detection sensitivity in environmental water samples.
This technology represents a key advancement towards a rapid early screening system for enteric viruses.
The developed device overcomes limitations of conventional methods, enabling faster and more efficient water quality monitoring.