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Journal of Biomedical Optics

Breath-by-breath measurement of oxygen using a compact optical sensor
Author(s): Conor S. Burke; John P. Moore; Dorota Wencel; Aisling K. McEvoy; Brian D. MacCraith
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Paper Abstract

We report on the development of a novel optical oxygen sensor for breath monitoring applications using the technique of phase fluorometry. The principal design criteria are that the system be compact, lightweight, and employ a disposable sensing element (while performing competitively with current commercial analyzers). The oxygen-sensitive, luminescent ruthenium complex Ru[dpp]32+ is encapsulated in a sol-gel matrix and deposited onto a custom-designed, polymer sensor chip that provides significantly improved luminescence capture efficiency. The performance of the sensor module is characterized using a commercially available lung simulator. A resolution of 0.03% O2 is achieved, which compares well with commercial breath monitoring systems and, when combined with its immunity to humidity and ability to respond effectively across a broad range of breathing rates, makes this device an extremely promising candidate for the development of a practical, low-cost biodiagnostic tool.

Paper Details

Date Published: 1 January 2008
PDF: 7 pages
J. Biomed. Opt. 13(1) 014027 doi: 10.1117/1.2870092
Published in: Journal of Biomedical Optics Volume 13, Issue 1
Show Author Affiliations
Conor S. Burke, Dublin City Univ. (Ireland)
John P. Moore, Dublin City Univ. (Ireland)
Dorota Wencel, Dublin City Univ. (Ireland)
Aisling K. McEvoy, Dublin City Univ. (Ireland)
Brian D. MacCraith, Dublin City Univ. (Ireland)

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