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Fluorescence detection methods for microfluidic droplet platforms

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Simultaneous multiple species detection in a flame using laser-induced fluorescence.

U Westblom, M Aldén

|June 18, 2010

Summary

This summary is machine-generated.

This study introduces a laser-induced fluorescence method for simultaneously detecting nitric oxide (NO), hydroxyl radicals (OH), and oxygen atoms (O) in flames. The technique utilizes spectral coincidences for precise measurements, aiding combustion analysis.

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Area of Science:

Chemical Physics
Spectroscopy
Combustion Science

Background:

Accurate measurement of reactive species like nitric oxide (NO), hydroxyl radicals (OH), and oxygen atoms (O) is crucial for understanding flame chemistry and combustion processes.
Traditional methods for detecting multiple species simultaneously in flames can be complex and limited in spatial resolution.

Purpose of the Study:

To present a novel laser-induced fluorescence (LIF) approach for the simultaneous detection of NO, OH, and O in flames.
To investigate the feasibility of spatially resolved measurements using a diode-array detector with this LIF technique.
To demonstrate the application of this method for studying laser-induced disturbances in flames.

Main Methods:

Utilized a Nd:YAG-based laser system to generate frequency-doubled (287 nm) and frequency-mixed (226 nm) laser beams.
Employed laser-induced fluorescence (LIF) based on spectral coincidences for simultaneous species detection.
Investigated the use of a diode-array detector for spatially resolved LIF measurements.

Main Results:

Successfully demonstrated simultaneous detection of NO, OH, and O in flames via LIF.
Confirmed the capability of the technique for spatially resolved measurements.
Showcased the utility of the LIF approach in analyzing laser-induced disturbances.

Conclusions:

The presented LIF technique offers a viable method for simultaneous, spatially resolved detection of key flame species (NO, OH, O).
This approach provides a valuable tool for advanced combustion diagnostics and flame chemistry research.
The technique's ability to study laser-induced disturbances opens avenues for optimizing laser-based combustion control and analysis.