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Published March 1, 1998 | Published
Journal Article Open

Particle sizing in concentrated suspensions by use of steady-state, continuous-wave photon-migration techniques

Abstract

We demonstrate a new approach for determining particle-size distribution in concentrated suspensions from spectral measurement of isotropic scattering coefficients by use of steady-state, continuous-wave photon-migration techniques. Successful recovery of particle-size distribution for TiO_2 suspensions in the form of log-normal functions is achieved through a regularized inverse algorithm, into which a synthesized scheme of Marquardt and Tikhonov regularizations has been incorporated. Our results for dense TiO_2 suspensions with three different particle concentrations are in excellent agreement with the size distribution as measured with x-ray sedimentation.

Additional Information

© 1998 Optical Society of America. Received October 14, 1997. We acknowledge financial support from the Greenville Hospital System–Clemson University Biomedical Cooperative [for H. Jiang (HJ)], the Clemson University Research Grant Committee (HJ), the Whitaker Foundation [L. V. Wang (LVW)], and the National Institutes of Health (grants R29CA68562 and R01CA71980 to LVW).

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