Optics: measuring and testing – For size of particles – By particle light scattering
Patent
1995-06-14
1997-07-22
Font, Frank G.
Optics: measuring and testing
For size of particles
By particle light scattering
G01N 1502
Patent
active
056508476
ABSTRACT:
A method and device for determination of absolute values of the size and the refractive index of individual microparticles. An optical scanning device for measurement of angular scattering pattern from individual microparticles is described. The light scatter is measured in different angles from moving particles inside the scanning optical system and the values and the angular locations of minima and maxima of the scattering pattern are registered. The size and the refractive index of individual microparticles are calculated from the registered minima and maxima using an empirical equation. An empirical equation has been derived from statistical analysis of angular scattering patterns. These patterns have been calculated on the basis of Mie scattering theory.
REFERENCES:
patent: 4286876 (1981-09-01), Hogg et al.
Maltsev et al., "Light Scattering and Fluorescence of Single Particles Measured by a Scanning Flow Cytometer", Int'l Symp. on Biomed. Optics, Paper No. 2386B-30, Session 5, San Jose, CA, Feb. 8, 1995 & Proceedings of SPIE, 2386 (1995) 199-205.
P.J. Wyatt, "Discrimination of Phytoplankton via Light-Scattering Properties", 34 Limnology and Oceanography, 96-112 (1989).
Maltsev et al., "Estimation of morphological characteristics of single particles from light scattering data in flow cytometry," Russian Chem. Bull. 43, 1181-1190 (Jul. 1984) (with English language abstract).
Phillips et al., "Measurement of the Lorenz-Mie Scattering of a Single Particle: polystyrene latex", Colloid and Interface Science, 1970, 34, p. 159.
P.J. Wyatt, "Light Scattering in the Microbial World", Colloid and Interface Science, 1972, v. 39, pp. 479-491.
V.R. Stull, "Size Distribution of Bacterial Cells," J. Bacteriol., 1972, 109, pp. 1301-1303.
Wyatt et al., "Aerosol Particle Analyzer", Applied Optics, 1988 27 (2), pp. 217-221.
Chernyshev Andrei Vitalievich
Maltsev Valeri Pavlovich
Erkki SOINI
Font Frank G.
Merlino Amanda
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