Abstract

Angularly resolved elastic light scattering patterns from individual aerosolized Bacillus subtilis spores were qualitatively compared with simulations. Two-dimensional angular optical scattering patterns of the spores were collected for polar scattering angles varying from approximately $77°$ to $130°$ and azimuthal angles varying from $0°$ to $360°$. Computations were performed with single T-matrix formalism by simulating a spore with three different particle shapes: (1) a finite-length cylinder with spherical end caps, (2) a spheroid, and (3) two spheres in contact. Excellent agreement between computation and measurement was found for the finite-length cylinder with spherical end caps, poorer agreement was found for the spheroids, and the poorest agreement was for the two spheres in contact.

© 2007 Optical Society of America

Characterizing and monitoring respiratory aerosols by light scattering

Yong-Le Pan, Kevin B. Aptowicz, Richard K. Chang, Matt Hart, and Jay D. Eversole
Opt. Lett. 28(8) 589-591 (2003)

Light scattering calculations exploring sensitivity of depolarization ratio to shape changes. I. Single spores in air

Stephen D. Druger, Jozsef Czege, Zhaozhang Li, and Burt V. Bronk
Appl. Opt. 48(4) 716-724 (2009)

Two-dimensional angular optical scattering for the characterization of airborne microparticles

Stephen Holler, Yongle Pan, Richard K. Chang, Jerold R. Bottiger, Steven C. Hill, and David B. Hillis
Opt. Lett. 23(18) 1489-1491 (1998)

Optical scattering by biological aerosols: experimental and computational results on spore simulants

Orazio I. Sindoni, Rosalba Saija, Maria Antonia Iatí, Ferdinando Borghese, Paolo Denti, Gustavo E. Fernandes, Yong-Le Pan, and Richard K. Chang
Opt. Express 14(15) 6942-6950 (2006)

Simultaneous forward- and backward-hemisphere elastic-light-scattering patterns of respirable-size aerosols

Gustavo E. Fernandes, Yong-Le Pan, Richard K. Chang, Kevin Aptowicz, and Ronald G. Pinnick
Opt. Lett. 31(20) 3034-3036 (2006)