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Fluorescence detection methods for microfluidic droplet platforms

Fluorescence detection methods for microfluidic droplet platforms

Published on: December 10, 2011

Microfluidics using a thiol-acrylate resin for fluorescence-based pathogen detection assays.

W Zhang¹, M P Tullier, K Patel

¹Institute for Micromanufacturing, Louisiana Tech University, 911 Hergot Ave, Ruston, LA 71272, USA. radadia@latech.edu.

|September 16, 2015

Summary

We developed new thiol-acrylate microfluidics for easy protein immobilization and pathogen detection. These devices offer a simple, effective method for sensitive fluorescence-based diagnostics.

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Area of Science:

Biomaterials Science
Microfluidics
Analytical Chemistry

Background:

Microfluidic devices are crucial for sensitive pathogen detection.
Traditional methods for fabricating microfluidics often involve complex steps like oxygen plasma treatment.
Protein immobilization is a key step in developing biosensors for pathogen detection.

Purpose of the Study:

To demonstrate thiol-acrylate microfluidics for single-step protein immobilization.
To enable fluorescence-based pathogen detection using these microfluidic devices.
To evaluate the performance and bonding capabilities of thiol-acrylate microfluidics.

Main Methods:

Soft lithography was used to prepare thiol-acrylate microfluidic devices.
Room temperature curing was employed for device fabrication.
Fluorescence-based assays were performed for pathogen detection.
Thiol-acrylate devices were tested for bonding to gold-coated surfaces.

Main Results:

Thiol-acrylate microfluidics enabled single-step protein immobilization.
The devices demonstrated effective fluorescence-based pathogen detection.
Background fluorescence of the thiol-acrylate resin was comparable to PDMS.
Successful bonding of thiol-acrylate devices to gold surfaces was achieved.

Conclusions:

Thiol-acrylate microfluidics provide a simplified platform for protein immobilization and pathogen detection.
The room temperature curing and oxygen plasma-free bonding offer advantages in microfluidic fabrication.
The ability to bond to gold surfaces facilitates integration with microfabricated sensors for advanced diagnostic applications.