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Proceedings Paper

Separating hazardous aerosols from ambient aerosols: role of fluorescence-spectral determination, aerodynamic deflector, and pulse aerodynamic localizer (PAL)
Author(s): Yong-Le Pan; Patrick J. Cobler; Scott A. Rhodes; Justin Halverson; Richard K. Chang
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Paper Abstract

An aerosol deflection technique based on the single-shot UV-laser-induced fluorescence spectrum from a flowing particle is presented as a possible front-end bio-aerosol/hazardous-aerosol sensor/identifier. Cued by the fluorescence spectra, individual flowing bio-aerosol particles (1-10 um in diameter) have been successfully deflected from a stream of ambient aerosols. The electronics needed to compare the fluorescence spectrum of a particular particle with that of a pre-determined fluorescence spectrum are presented in some detail. The deflected particles, with and without going through a funnel for pulse aerodynamic localization (PAL), were collected onto a substrate for further analyses. To demonstrate how hazardous materials can be deflected, TbCl3⋅6H2O (a stimulant material for some chemical forms of Uranium Oxide) aerosol particles (2 μm in diameter) mixed with Arizona road dust was separated and deflected with our system.

Paper Details

Date Published: 28 October 2005
PDF: 6 pages
Proc. SPIE 5990, Optically Based Materials and Optically Based Biological and Chemical Sensing for Defence II, 59900Y (28 October 2005); doi: 10.1117/12.634335
Show Author Affiliations
Yong-Le Pan, Yale Univ. (United States)
Patrick J. Cobler, Vtech Engineering Corp. (United States)
Scott A. Rhodes, Vtech Engineering Corp. (United States)
Justin Halverson, Savannah River National Lab. (United States)
Richard K. Chang, Yale Univ. (United States)

Published in SPIE Proceedings Vol. 5990:
Optically Based Materials and Optically Based Biological and Chemical Sensing for Defence II
Anthony W. Vere; John C. Carrano; Arturas Zukauskas; James G. Grote; Francois Kajzar, Editor(s)

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