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Absorption and scattering properties of dense ensembles of nonspherical particles

Auger, J, Martinez, V and Stout, B 2007, 'Absorption and scattering properties of dense ensembles of nonspherical particles', Journal Of The Optical Society Of America A: Optics Image Science And Vision, vol. 24, pp. 3508-3516.

Document type: Journal Article
Collection: Journal Articles

Title Absorption and scattering properties of dense ensembles of nonspherical particles
Author(s) Auger, J
Martinez, V
Stout, B
Year 2007
Journal name Journal Of The Optical Society Of America A: Optics Image Science And Vision
Volume number 24
Start page 3508
End page 3516
Total pages 8
Publisher Optical Society of America
Abstract The purpose of this work is to show that an appropriate multiple T-matrix formalism can be useful in performing qualitative studies of the optical properties of colloidal systems composed of nonspherical objects (despite limitations concerning nonspherical particle packing densities). In this work we have calculated the configuration averages of scattering and absorption cross sections of different clusters of dielectric particles. These clusters are characterized by their refraction index, particle shape, and filling fraction. Computations were performed with the recursive centered T-matrix algorithm (RCTMA), a previously established method for solving the multiple scattering equation of light from finite clusters of isotropic dielectric objects. Comparison of the average optical cross sections between the different systems highlights variations in the scattering and absorption properties due to the electromagnetic interactions, and we demonstrate that the magnitudes of these quantities are clearly modulated by the shape of the primary particles.
Subject Colloid and Surface Chemistry
Keyword(s) T-matrix
electromagnetic scattering
light scattering
cross-sections
spheres
approximation
configuration
computations
clusters
Copyright notice © 2007 Optical Society of America
ISSN 1084-7529
 
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