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Updated: Aug 9, 2025

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

Multiplexed and continuous microfluidic sensors using dynamic complex droplets.

Baishali Barua¹, Tyler J Durkin¹, Isabel M Beeley¹

¹Department of Chemical and Environmental Engineering, University of Arizona, 1133 E. James E. Rogers Way, Tucson, Arizona 85721, USA. suchol@arizona.edu.

|February 22, 2023

Summary

This summary is machine-generated.

This study presents a novel optical sensing platform using complex droplets in poly(dimethylsiloxane) microfluidics for real-time chemical detection. The system translates interfacial tension changes into optical signals for environmental and biosensing applications.

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Fluorescence detection methods for microfluidic droplet platforms

Fluorescence detection methods for microfluidic droplet platforms

Published on: December 10, 2011

Area of Science:

Materials Science
Chemical Engineering
Analytical Chemistry

Background:

Complex droplets exhibit stimuli-responsive properties, making them promising for chemical sensing.
Existing sensing platforms lack real-time, continuous monitoring capabilities for interfacial tension changes.

Purpose of the Study:

To develop a real-time optical sensing platform using complex droplets and microfluidics.
To demonstrate the transduction of interfacial tension changes into optical signals.
To create a multiplexed sensing system for environmental and biosensing.

Main Methods:

Fabrication of poly(dimethylsiloxane) (PDMS) microfluidic devices.
Integration of complex emulsions within microfluidic channels.
Utilizing directional emission to measure fluorescent signals.
Modifying droplet interfacial functionalization and fluorescent dyes for differential responses.

Main Results:

Demonstrated a real-time optical sensing platform combining PDMS microfluidics and complex droplets.
Successfully transduced interfacial tension changes into measurable optical signals via directional emission.
Generated multiplexed droplet formulations with differential responses to stimuli like surfactant composition and pH.

Conclusions:

The developed platform offers a proof-of-concept for continuous, multiplexed sensing.
Potential applications include miniaturized, on-site environmental monitoring and biosensing.
The system leverages stimuli-responsive complex droplets for dynamic optical property sensing.