A study of spore identification from diffraction data

Thanh Le; Yang Cao; M. A. Fiddy; P. Gardner

doi:10.1117/12.719542

11 May 2007 A study of spore identification from diffraction data

Thanh Le, Yang Cao, M. A. Fiddy, P. Gardner

Proceedings Volume 6554, Chemical and Biological Sensing VIII; 65540M (2007) https://doi.org/10.1117/12.719542
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Much work has been reported on attempting to identify spores from their spectral signatures. Since spores are also complex scattering objects, with a layered internal refractive index structure, it makes sense to explore the possibility of making an identification simply from a scattering pattern or from anticipated scattering characteristics combined with a spectral signature. Models for scattering from simple geometrical coated shapes have been developed and recently Bragg spheres and onion-ring resonator-like scatterers in the Mie regime have received considerable attention driven by other applications. Also, our own group has recently advanced a method for inverting scattered field data from strongly scattering penetrable targets. We present here some very early considerations of the convergence of these possibilities and suggest some simple experiments that might advance our understanding of spore detection and identification.

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Thanh Le, Yang Cao, M. A. Fiddy, and P. Gardner "A study of spore identification from diffraction data", Proc. SPIE 6554, Chemical and Biological Sensing VIII, 65540M (11 May 2007); https://doi.org/10.1117/12.719542

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KEYWORDS

Scattering

Mie scattering

Diffraction

Optical spheres

Particles

Refractive index

Data modeling

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