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Updated: Jun 3, 2026

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Fluorescence-based aluminum ion sensing using a surface-functionalized microstructured optical fiber.

Stephen C Warren-Smith¹, Sabrina Heng, Heike Ebendorff-Heidepriem

¹Institute for Photonics & Advanced Sensing, School of Chemistry & Physics, The University of Adelaide, Adelaide, South Australia 5005.

Langmuir : the ACS Journal of Surfaces and Colloids

|April 8, 2011

Summary

This summary is machine-generated.

A novel optical fiber sensor for detecting aluminum ions has been developed. This microstructured optical fiber sensor uses lumogallion (3) for sensitive, real-time fluorescence measurements.

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Area of Science:

Materials Science
Analytical Chemistry
Sensor Technology

Background:

Microstructured optical fibers (MOFs) offer unique evanescent field interactions.
Fluorescence-based indicators provide sensitive detection methods.
Aluminum ion detection is crucial in various environmental and biological applications.

Purpose of the Study:

To develop the first microstructured optical fiber-based sensor platform for aluminum ions.
To utilize a surface-attached derivative of lumogallion (3) as a fluorescence indicator.
To enable real-time and distributed measurements of aluminum ions.

Main Methods:

Fabrication of a microstructured optical fiber sensor.
Covalent attachment of lumogallion (3) derivative to a polyelectrolyte-coated glass surface.
Integration of the functionalized surface into the internal holes of a suspended-core MOF.

Main Results:

Demonstrated successful fluorescence response to aluminum ions.
Achieved strong evanescent field interactions due to the small core size of the MOF.
Developed an effective aluminum sensor platform.

Conclusions:

A versatile MOF sensor platform for aluminum ion detection has been successfully fabricated.
The sensor enables real-time and distributed measurements.
The approach is adaptable for detecting other metal ions.