Characterizing and monitoring respiratory aerosols by light scattering
Optics Letters, Vol. 28, Issue 8, pp. 589-591 (2003)
http://dx.doi.org/10.1364/OL.28.000589
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Abstract
The elastic-scattering intensity pattern from a single particle as a function of spherical coordinate angles θ and ø provides detailed information on the pattern’s morphology. By use of an ellipsoidal reflector and a CCD camera, a single-laser-shot intensity pattern from a large angular range (θ from 90° to 168° and ø from 0° to 360°) was detected from a single aerosol (e.g., a Bacillus subtilis spore, a 1-µm-diameter polystyrene latex sphere, or a cluster of either of these) flowing through the reflector’s focal volume at 5 m/s. Noticeable differences in the large-angle-range two-dimensional angular optical scattering (LATAOS) suggest that the LATAOS pattern could be useful in differentiating and classifying life-threatening aerosols from normal background aerosols.
© 2003 Optical Society of America
[Optical Society of America ]
OCIS Codes
(000.1430) General : Biology and medicine
(010.1100) Atmospheric and oceanic optics : Aerosol detection
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
Citation
Yong-Le Pan, Kevin B. Aptowicz, Richard K. Chang, Matt Hart, and Jay D. Eversole, "Characterizing and monitoring respiratory aerosols
by light scattering," Opt. Lett. 28, 589-591 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-8-589
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