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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 28, Iss. 8 — Apr. 15, 2003
  • pp: 589–591

Characterizing and monitoring respiratory aerosols by light scattering

Yong-Le Pan, Kevin B. Aptowicz, Richard K. Chang, Matt Hart, and Jay D. Eversole  »View Author Affiliations


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

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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