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1. WO2002025247 - A NON-INTRUSIVE METHOD AND APPARATUS FOR CHARACTERIZING PARTICLES BASED ON SCATTERING OF ELLIPTICALLY POLARIZED RADIATION

Publication Number WO/2002/025247
Publication Date 28.03.2002
International Application No. PCT/US2001/029240
International Filing Date 19.09.2001
Chapter 2 Demand Filed 07.03.2002
IPC
G01N 15/02 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
02Investigating particle size or size distribution
G01N 21/21 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
21Polarisation-affecting properties
G01N 21/47 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
CPC
G01N 15/0211
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
02Investigating particle size or size distribution
0205by optical means, e.g. by light scattering, diffraction, holography or imaging
0211Investigating a scatter or diffraction pattern
G01N 21/21
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
21Polarisation-affecting properties
G01N 21/47
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
Applicants
  • MENGUC, M., Pinar [TR]/[US]
  • MANICKAVASAGAM, Sivakumar [IN]/[US]
Inventors
  • MENGUC, M., Pinar
  • MANICKAVASAGAM, Sivakumar
Agents
  • HARGIS, Michael, S.
Priority Data
60/233,86420.09.2000US
60/234,06120.09.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A NON-INTRUSIVE METHOD AND APPARATUS FOR CHARACTERIZING PARTICLES BASED ON SCATTERING OF ELLIPTICALLY POLARIZED RADIATION
(FR) PROCEDE ET APPAREIL NON INTRUSIFS PERMETTANT DE CARACTERISER DES PARTICULES PAR DIFFUSION D'ELEMENTS MATRICIELS AU MOYEN D'UNE RADIATION POLARISEE ELLIPTIQUEMENT
Abstract
(EN)
A non-intrusive method of characterizing particles through inverse analysis of experimental data based on measurements using elliptically polarized radiation is provided. A database of theoretical absorption and scattering data sets for particles is compiled. Optimum settings for an experimental test to gather an experimental absorption and scattering data set are determined and the experimental test is conducted. The experimental absorption and scattering data set is then compared to the theoretical absorption and scattering data sets of the database of theoretical absorpiton and scattering data sets in order to determine an absorption and scattering data set which differs the least from the experimental absorption and scattering data set in order to characterize the particles.
(FR)
Cette invention concerne procédé non intrusif permettant de caractériser des particules via une analyse inverse de données expérimentales sur la base de mesures par radiation polarisée elliptiquement. On compile une base de données de jeux de données d'absorption théorique et de diffusion. Après réglages optimum pour un essai destiné à recueillir un jeu expérimental de données d'absorption et de diffusion, on effectue l'essai expérimental. Le jeu de données expérimental d'absorption et de diffusion est ensuite comparé à des jeux de données théoriques d'absorption et de diffusion tirés de la base de données du même nom, ce qui permet de déterminer un jeu de données d'absorption et de diffusion qui diffère du jeu de données expérimentales d'absorption et de diffusion et donc de caractériser les particules.
Also published as
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